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The Adaptogen Vitamin C Oil Serum

Organic Vitamin C Oil Serum with 15% Vitamin C Tetra & Adaptogens on a Squalane Oil Base for Nourished, Firm, and Evenly Radiant Skin

  • Visibly reduces pigment spots with 15% Vitamin C Tetra
  • Promotes collagen synthesis and firms the skin
  • Effectively protects against blue light, environmental, and sun damage
  • Instant effect: silky-radiant complexion
  • Nourishes the skin long-lastingly – no additional cream needed
  • Ideal for sensitive, mature, and dry skin
  • Organic (84%), natural & vegan
Cruelty-Free Of course
Cruelty-Free Bio-Inhaltsstoffe
Cruelty-Free Vegan
Cruelty-Free Evidenzbasierte Wirkstoffe
Cruelty-Free Nicht komedogen
Cruelty-Free Ohne austrocknende Alkohole & Duftstoffe

89,00 €
Unit price 2.966,67 € per  l

incl. VAT plus shipping costs

Back in Stock ab 15.05.26
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PRODUCT DESCRIPTION

STABLE ORGANIC VITAMIN C OIL SERUM [15%] WITH ADAPTOGENS & ANTIOXIDANTS

85% NATURAL + 15% VITAMIN C OF NATURAL ORIGIN // 84% BIO // 100% VEGAN // MICROBIOME-FRIENDLY

This highly effective, organic* oil serum with 15% vitamin C Tetra (one of the most active forms of vitamin C), with one of the most powerful antioxidants in the world, astaxanthin, as well as with bioactive adaptogens effectively protects the skin from harmful environmental effects such as UV and blue light. It also reduces the signs of aging and protects against new ones, while intensively nourishing the skin and giving it a radiant, even complexion. 

Quantity 30 ml/ 1 fl oz 

PROTECTS

Protects the skin from harmful environmental influences such as UV and infrared radiation, blue light and air pollution and strengthens the skin barrier. 

BRIGHTENS

Brightens hyperpigmentation and provides an even complexion.

FIRMS

Promotes collagen production, increases skin elasticity as well as firmness, and reduces wrinkles.

HERO INGREDIENTS

VITAMIN C TETRA (15%)

Vitamin C Tetra is a new and highly effective, extremely stable and at the same time gentle form of vitamin C which penetrates more deeply into the skin. It effectively protects the skin from UV damage, stimulates collagen production and reduces fine lines, wrinkles and hyperpigmentation.

RED PHASE ALGAE

Astaxanthin, extracted from red phase algae, is considered one of the most powerful antioxidants in the world. It neutralises free radicals and inhibits the breakdown of collagen.

GOTU KOLA (ORGANIC) 

Organic Gotu Kola extract helps reduce inflammation and promotes collagen production. Due to the high content of lutein, Gotu Kola effectively protects against blue light. This Asian medicinal plant is one of the most important adaptogens in Ayurveda and TCM.

GINKGO (ORGANIC) 

Organic ginkgo, a powerful adaptogen from TCM, protects the skin from the negative effects of blue light, has a strong anti-inflammatory effect and strengthens the skin barrier.

PLUM KERNEL OIL (ORGANIC) 

Cold-pressed organic plum seed oil provides the skin with valuable fatty acids and minerals, is rich in vitamin E as well as provitamin A, and has an exceptionally powerful antioxidant effect.

SQUALANE (ORGANIC)

Squalane from sustainably grown organic sugar cane intensively nourishes the skin with valuable fatty acids, provides long-lasting moisture and gives incredible suppleness. Our squalane is a certified organic ingredient and supports a healthy microbiome. 

VITAMIN E

Natural vitamin E strengthens the skin barrier and protects against free radicals.

WHAT MAKES OUR OIL SERUM SO SPECIAL

  • 84% organic ingredients
  • Potent serum and nourishing oil in one product
  • Innovative slow aging formulation
  • Anti-inflammatory and microbiome-friendly
  • Suitable for all skin types, perfect for dry, mature and sensitive skin 
  • Formulated with scientifically proven ingredients in reasonable concentrations
  • Without fillers and water, contains only high quality, effective ingredients
  • Free from essential oils, alcohol, synthetic colors, fragrances and preservatives, microplastics, mineral oils, silicones and parabens
  • Naturally stable formulation without preservatives
  • Vegan und cruelty free
  • NEW: almost plastic-free packaging with 100% recyclable glass bottle, silicone dropper with aluminum ring (there is only a small plastic element inside the dropper).


PRODUCT DETAILS

HERO INGREDIENTS

VITAMIN C TETRA 15%

Vitamin C Tetra is a new highly effective, extremely stable yet mild form of Vitamin C that penetrates deep into the skin. It effectively protects the skin from UV damage*, stimulates collagen production, reduces fine lines and wrinkles, and hyperpigmentation.

Good to know: Vitamin C Tetra is so effective at reducing hyperpigmentation that in Asia, even in low doses, it is considered a "lightening agent." You can find more information about Vitamin C Tetra in our detailed blog articles "Hyperpigmentation: Formation, Prevention, and Treatment" and "Not All Vitamin C Is Created Equal".

ASTAXANTHIN

Astaxanthin, extracted from the blood rain algae, is considered one of the most powerful antioxidants in the world. It effectively protects the skin from free radicals and inhibits collagen breakdown.

GOTU KOLA (ORGANIC) 

Organic Gotu Kola extract protects the skin from inflammation and promotes collagen production. Due to its high lutein content, Gotu Kola effectively protects against blue light. This Asian medicinal plant is one of the most important adaptogens in Ayurveda and TCM.

GINKGO (ORGANIC) 

Organic Ginkgo, a powerful adaptogen from TCM, protects the skin from the negative effects of blue light, has strong anti-inflammatory properties, and strengthens the skin barrier.

PLUM KERNEL OIL (ORGANIC) 

Cold-pressed organic plum kernel oil provides the skin with valuable fatty acids and minerals, is rich in vitamin E and provitamin A, and has an exceptionally strong antioxidant effect.

SQUALANE (ORGANIC)

Squalane from sustainably grown organic sugarcane intensely nourishes the skin, improves the skin's moisture balance, and gives it incredible suppleness. Clinical studies have confirmed that the squalane we use supports a healthy microbiome and promotes a strong skin barrier. 

NATURAL VITAMIN E

Natural vitamin E strengthens the skin barrier and protects against free radicals. At the same time, our highly concentrated vitamin E acts as a natural preservative, keeping our oil fresh for a long time.

WHAT MAKES OUR OIL SERUM SO SPECIAL

  • 84% organic ingredients
  • Active ingredient serum and nutrient-rich care in just one product 
  • Innovative, natural cosmetic slow-aging formulation
  • Skin-soothing and microbiome-strengthening formula
  • Suitable for all skin types, perfect for dry, mature, and sensitive skin
  • Formulated with scientifically proven ingredients in meaningful concentrations
  • No fillers or water, contains only high-quality, effective ingredients
  • Free from essential oils, alcohol, synthetic colors, fragrances, and preservatives, microplastics, mineral oils, silicones, and parabens
  • Naturally stable formulation without preservatives
  • Vegan and cruelty-free
  • NEW: almost plastic-free packaging with a 100% recyclable glass bottle, silicone dropper with aluminum ring (only a small plastic element is inside the dropper).

*Please note that the product does not replace daily sun protection. 

STUDIES

Stability, transdermal penetration, and cutaneous effects of ascorbic acid and its derivatives, 2012

Assessment of penetration of Ascorbyl Tetraisopalmitate into biological membranes by molecular dynamics. 2016

Topical Vitamin C and the Skin: Mechanisms of Action and Clinical Applications, 2017

Dermocosmetics against skin aging

Protective effects of astaxanthin on skin: Recent scientific evidence, possible mechanisms, and potential indications

Overall skin tone and skin-lightening-improving effects with oral supplementation of lutein and zeaxanthin isomers: a double-blind, placebo-controlled clinical trial

Synergistic effects of green tea and ginkgo biloba extracts on the improvement of skin barrier function and elasticity

Prunus domestica, Prunus persica and Prunus avium extracts: determination of radical scavenging activities and development of natural antioxidant emulsions

Biological and Pharmacological Activities of Squalene and Related Compounds: Potential Uses in Cosmetic Dermatology

Squalane as a Promising Agent Protecting UV-Induced Inhibition of Collagen Biosynthesis and Wound Healing in Human Dermal Fibroblast

INGREDIENTS

INGREDIENTS

Vegan & cruelty free 

*85% NATURAL + 15% VITAMIN C OF NATURAL ORIGIN/ 84% ORGANIC/ 100% VEGAN

Made in Germany

Squalane**, Ascorbyl Tetraisopalmitate (Vitamin C), Prunus Domestica (Plum) Seed Oil*, Helianthus Annuus (Sunflower) Hybrid Oil*, Tocopherol (Vitamin E), Helianthus Annuus (Sunflower) Seed Oil, Centella Asiatica (Gotu Kola) Extract*, Ginkgo Biloba Leaf Extract*, Carthamus Tinctorius (Safflower) Seed Oil, Astaxanthin (Red Phase Algae)

*certified organic

**made from 100% certified organic Sugarcane

INGREDIENTS EXPLAINED:

Squalan (organic based) 
Obtained from organic sugar cane. Natural component of the skin's own protective layer in form of squalene, protects the skin from moisture loss. Proven to strengthen the microbiome.
Ascorbyl Tetraisopalmitate (Vitamin C)
15%, vitamin C of natural origin according to ISO 16128. Stimulates collagen production, soothes pigmentation spots, protects against UVA and UVB radiation.
Prunus Domestica (Plum) Seed Oil
Cold-pressed organic plum seed oil. Stimulates cell renewal and has a strong antioxidant effect
Helianthus Annuus (Sunflower) Hybrid Oil
<1%, organic sunflower oil in which the plant extracts gotu kola and ginkgo are dissolved.

Oil from the seeds of a hybrid rich in oleic acid sunflower, which is different from ordinary sunflower seed oil due to the amount of this fatty acid.
Tocopherol // Vitamin E
Natural antioxidant. Strengthens the skin barrier.
Helianthus Annuus (Sunflower) Seed Oil
<1%, sunflower oil in which vitamin E is dissolved.
Centella Asiatica (Gotu Kola) Extract // Gotu Kola
Organic plant extract. Has an anti-inflammatory effect, protects against blue light and stimulates collagen production.
Ginkgo Biloba Leaf Extract* // Ginkgo
Organic plant extract. Has an anti-inflammatory effect, protects against blue light, strengthens the skin barrier.
Carthamus Tinctorius (Safflower) Seed Oil
Natural thistle oil; oil in which astaxanthin is dissolved.
Astaxanthin (Red Phase Algae)
Natural extract from the red phase algae. Is considered to be the strongest antioxidant in the world.


SUSTAINABILITY

INGREDIENTS

84% of the ingredients come from sustainable, certified organic agriculture. The base of our serum consists of squalane, which is obtained from sustainably grown sugar cane.

MANUFACTURING

Our serums are manufactured in a sustainable factory specialized in natural cosmetics in Germany.

PACKAGING

NEW: almost plastic-free packaging with 100% recyclable glass bottle, silicone dropper with aluminum ring (there is only a small plastic element inside the dropper).

Packaging cardboard made from 100% biodegradable, FSC-certified natural cardboard printed with environmentally friendly inks.





APPLICATION

HOW TO APPLY & FAQ

HOW TO APPLY

The Adaptogen Vitamin C Oil Serum can be applied in the morning and/ or evening:

  1. Thoroughly cleanse your skin.
  2. Moisten your skin with water or a mild toner such as rose water. The oil serum should be applied onto slightly damp skin, enabling it to best soak into your skin.
  3. Now apply 4 to 5 drops of the oil serum onto your damp skin.
  4. Massage the oil serum gently into your skin. After just a few minutes, the oil serum has completely soaked into the skin. Enjoy your silky-smooth and glowing skin!

Tip: You can also use the Adaptogen Vitamin C Oil Serum as an active-ingredient booster. Just add a few drops of the oil serum to your favourite skincare product.

FAQ

When is the best time to use The Adaptogen Vitamin C Oil Serum?

Ideally, our Adaptogen Vitamin C Oil Serum should be applied in the morning, as the vitamin C tetra contained within the serum has been proven to protect the skin from UV radiation*. The oil serum also contains powerful adaptogens and antioxidants that protect the skin from blue light, making our Vitamin C Oil Serum the ideal everyday companion.

In which step of my beauty routine do I use The Adaptogen Vitamin C Oil Serum?

Our Adaptogen Vitamin C Oil serum is best applied after toner and water-based serums, such as a hyaluronic acid serum. This allows the oil serum to optimally lock in the moisture previously added. No cream needs to be used afterwards, as the squalane contained in the serum is rich and nourishing but doesn’t weigh the skin down.

Is The Adaptogen Vitamin C Oil Serum suitable for sensitive skin?

Yes! Our Adaptogen Vitamin C Oil Serum is ideal for sensitive skin because it is mildly formulated and contains no alcohol, preservatives, fragrances, essential oils or other potentially irritating ingredients. The ingredients used have been proven to strengthen the skin barrier, protecting and soothing sensitive skin. In addition, vitamin C tetra is exceptionally well tolerated and does not irritate the skin, as is often the case with ascorbic acid, also known as pure vitamin C. 

ruhi TIP: We always recommend that you test a new skincare product on a small area of your skin before adding it to your skincare routine. This way, you can easily rule out an allergic reaction to any of the ingredients.

Why do you use a clear bottle for The Adaptogen Vitamin C Oil Serum?

Unlike pure vitamin C (ascorbic acid) and other derivatives, the vitamin C tetra we use in our formula is one of the most stable forms of vitamin C and is perfectly able to withstand changes in temperature and oxidation levels.

Scientific studies have shown that vitamin C tetra is even stable up to 250°C (!)**. Therefore, we can use a transparent bottle without any problems (unlike ascorbic acid, which is very sensitive to oxidation and should only be filled in amber glass).

Why does The Adaptogen Vitamin C Oil Serum cost more than the other serums?

Vitamin C tetra is an innovative, oil-soluble vitamin C derivative that comes at a much higher price point than ascorbic acid, which is affordable and straightforward to source. We also use a high concentration (15%) of vitamin C tetra. Therefore, the pure product price of our vitamin C serum is higher—especially compared to other products that often contain only 1% of the active ingredient.

If you have any further questions, please feel free to email us at hello@ruhi-rituals.com. We will try to answer your question as soon as possible.


*Please note that this product does not replace daily sun protection.

**Stability evaluation of tocopheryl acetate and ascorbyl tetraisopalmitate in isolation and incorporated in cosmetic formulations using thermal analysis, 2010.



SUSTAINABILITY

 

INGREDIENTS

84% of the ingredients come from sustainable, certified organic cultivation. The base of our serum consists of squalane, which is obtained from sustainably grown sugar cane.

PRODUCTION

Our serums are manufactured in a sustainable factory in Germany specializing in natural cosmetics.

PACKAGING

NEW: almost plastic-free packaging with 100% recyclable glass bottle, silicone dropper with aluminum ring (only a small plastic element inside the dropper).
Packaging box made of 100% biodegradable, sustainable natural cardboard, printed with environmentally friendly inks.

30-DAY FEEL-GOOD PROMISE

We are convinced of the fantastic effect of our special products and we want you to be too. If you are not satisfied with your product, we will refund the full purchase price within 30 days. Simply return the product to us in its original packaging. If you have any questions, please contact us at any time via hello@ruhi-rituals.com.


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What makes our Vitamin C Serum so special


VISIBLY REDUCES PIGMENT SPOTS

15% Vitamin C Tetra, a particularly potent form of vitamin C, brightens existing pigment spots and prevents new discolorations.


PROMOTES COLLAGEN SYNTHESIS

The Vitamin C serum promotes collagen production, thereby increasing skin elasticity and firmness and reducing wrinkles.


PROTECTS AGAINST ENVIRONMENTAL DAMAGE

Vitamin C Tetra, astaxanthin and powerful adaptogens effectively protect the skin from harmful environmental influences such as UV and infrared radiation*, blue light and air pollution.


INTENSELY NOURISHES & STRENGTHENS THE SKIN BARRIER

The base of Squalane, a skin-identical lipid, intensely nourishes, strengthens the skin barrier and leaves the skin feeling silky-soft.


NATURAL, ORGANIC & GENTLE ON THE SKIN

The Vitamin C serum consists exclusively of ingredients of natural origin, contains 84% certified organic ingredients and is free of drying alcohols and fragrances for best tolerability.

Naturally effective ingredients of the highest quality

Inspired by centuries-old skincare rituals
and state-of-the-art dermatological research.

VITAMIN C TETRA 15%

Vitamin C Tetra is a new, highly effective, extremely stable yet gentle form of Vitamin C that penetrates deep into the skin. It effectively protects the skin from UV damage*, stimulates collagen production, and reduces fine lines, wrinkles, and hyperpigmentation.

ASTAXANTHIN

Astaxanthin, derived from the red algae, is considered one of the most powerful antioxidants in the world. It effectively protects the skin from free radicals and inhibits the breakdown of collagen.

GOTU KOLA (ORGANIC)

Organic extract from the Asian Gotu Kola plant stimulates the formation of collagen and elastin, and tightens the skin. The medicinal plant is one of the most important adaptogens in Ayurveda and TCM.

GINKGO (ORGANIC)

Organic Ginkgo, a powerful adaptogen from TCM, protects the skin from the negative effects of blue light, has strong anti-inflammatory properties, and strengthens the skin barrier.

PLUM KERNEL OIL (ORGANIC)

Cold-pressed organic plum kernel oil provides the skin with valuable fatty acids and minerals, is rich in vitamin E and provitamin A, and has an exceptionally strong antioxidant effect.

SQUALANE (BIO-BASED)

Squalane from sustainably grown organic sugarcane intensely nourishes the skin, improves its moisture balance, and gives it incredible suppleness. Clinical studies have confirmed that the squalane we use promotes a healthy microbiome and a strong skin barrier.

NATURAL VITAMIN E

Natural vitamin E additionally strengthens the skin barrier and protects the skin from free radicals that accelerate skin aging. Our natural vitamin E comes from non-GMO soybeans.

Founder's Note: On the Formulation

I wanted a product that combines the efficacy of a vitamin C serum with the nourishing power of a face oil – and that's exactly what our Adaptogen Vitamin C Oil Serum is.

It alleviates hyperpigmentation with powerful 15% Vitamin C Tetra, boosts collagen production, intensely nourishes with bio-based squalane, and protects with potent adaptogens & antioxidants such as astaxanthin, ginkgo, and gotu kola.

For me, it's the perfect everyday serum: it saves me a skincare step in the morning (no additional cream needed), boosts my sun protection, and gives my skin a delicate glow.

Enjoy,

X Britta

Founder of ruhi

Why is Vitamin C Tetra the better Vitamin C?

Vitamin C Tetra is one of the most effective forms of vitamin C in skincare. As a fat-soluble variant, it penetrates deeper into the skin than water-soluble derivatives. There, it specifically targets hyperpigmentation by inhibiting melanin production and preventing new pigment spots. Fun fact: It is particularly popular in South Korea and is considered a lightening agent at concentrations as low as 2%.*

At the same time, Vitamin C Tetra supports protection against UV-induced cell damage and, like pure ascorbic acid, promotes collagen formation for smoother, firmer skin. Vitamin C Tetra is particularly gentle and ideal for sensitive skin. In our Vitamin C Oil Serum, we use a highly concentrated 15% Vitamin C Tetra – highly effective, yet super gentle on the skin.

* Ascorbyl Tetraisopalmitate Inclusion into γ-Cyclodextrin and Mesoporous SBA-15: Preparation, Characterization and In Vitro Release Study, Cosmetics 2017

Recommended by skincare experts

"A game-changer in your skincare ritual!"

VOGUE

"Editor's Pick: Mineral SPF without a white cast!"

InStyle

"BEST BAKUCHIOL SERUM: With regular use, fine lines and wrinkles can be visibly reduced and the body's own collagen production activated."

HER

"The product is great. My skin has become much softer and smoother. I'm a huge fan!"

Elina Dietrich
Beauty Blogger @Bareminds.de

"My favorite ritual! My skin feels smoother, wrinkles and lines are diminished, and I often get compliments on my beautiful glow."

Nina Goldhammer
Model

"I highly recommend ruhi's Bakuchiol Oil Serum as a plant-based alternative to retinol."

Dunja Kara
Organic Beauty Coach

"ruhi’s Bakuchiol serum was one of my staples in the bathroom for months and I was already blown away by the instant effect you could see after usage."

Julia Knolle
Co-Founder Hey Woman!
Natürlich-wirksames Slow-Aging

Natürlich-wirksames Slow-Aging

Evidenzbasierte Wirkstoffe

Evidenzbasierte Wirkstoffe

Ideal for sensitive skin

Ideal for sensitive skin

Natürlich & mit Bio-Inhaltsstoffen

Natürlich & mit Bio-Inhaltsstoffen

100% vegan & tierleidfrei

100% vegan & tierleidfrei

Hergestellt in Deutschland

Hergestellt in Deutschland

Frequently asked questions about the product

When is the best time to apply the Vitamin C Oil Serum?

Ideally, the Vitamin C Oil Serum should be applied in the morning, as the Vitamin C Tetra it contains effectively protects the skin from UV radiation* and can thus support your sun protection. The oil serum also contains powerful adaptogens and antioxidants that protect the skin from blue light. This makes our Vitamin C Oil Serum the ideal daily companion.

*Please note that the product does not replace daily sun protection.

At what step of my beauty routine do I use the Vitamin C serum?

Use the Vitamin C Serum after the toner and water-based serums, such as a hyaluronic serum. The oil serum can then optimally seal in the moisture previously applied. No cream is needed afterwards, as the squalane contained in the Vitamin C Serum is very rich and nourishing – without weighing the skin down.

Is the Vitamin C serum also suitable for sensitive skin?

Yes! The Adaptogen Vitamin C Oil Serum is ideal for sensitive skin: it is mildly formulated and contains no alcohol, preservatives, fragrances, essential oils, or other potentially irritating ingredients. At the same time, our ingredients are proven to strengthen the skin barrier. In addition, Vitamin C-Tetra is particularly well-tolerated and does not irritate the skin, as is often the case with ascorbic acid.

OUR TIP: We generally recommend testing a new skincare product on a small area of skin before incorporating it into your skincare routine. This way, you can easily rule out an allergic reaction to any of the ingredients.

Why is Vitamin C Tetra more effective than other forms of Vitamin C?

Vitamin C Tetra is considered particularly effective because it:

  1. Inhibits melanin production: It reduces existing hyperpigmentation and prevents new dark spots.
  2. Ensures better skin penetration: As a fat-soluble variant, it penetrates deeper into the skin than water-soluble forms like Ascorbyl Glucoside.
  3. Supports your UV protection: It protects the skin from UV-induced cell damage (but does not replace sunscreen).
  4. Promotes collagen formation: Like pure ascorbic acid, it stimulates collagen production and thus works against wrinkles.
  5. Is gentle on the skin: It is particularly suitable for sensitive skin, as it is effective and at the same time low-irritation. (In contrast to pure ascorbic acid, which can irritate sensitive skin.)

Good to know: Vitamin C Tetra is particularly popular in South Korea; from a 2% dosage, it is considered a lightening agent there.

In our Vitamin C serum, we use a highly concentrated 15% Vitamin C Tetra – for maximum results without irritation. You can learn more about Vitamin C in this blog article: https://ruhi-rituals.com/blogs/selfcare/vitamin-c-ist-nicht-gleich-vitamin-c-diese-variante-wirkt-am-besten.