The Adaptogen Vitamin C Oil Serum

€296,67 / 100ml

including taxes plus shipping



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


Brightens hyperpigmentation and provides an even complexion.


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



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.


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.


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.


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.


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 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. 


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


  • 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).


Vegan & cruelty free 


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


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.



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.


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


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.



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.


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 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.

"A vitamin C serum is an absolute must-have product in my slow-ageing routine, alongside other products like a nourishing facial oil. Luckily, our Vitamin C Oil Serum combines both—it is a potent, collagen-building vitamin C serum and an ultra-nourishing facial oil all in one product. This multi-use functionality allows me to combine two steps of my morning routine into just one and start the day more at ease.

The Vitamin C Oil Serum is also my ideal everyday companion because it not only protects my skin from UV radiation but also from blue light when I'm sitting in front of the laptop all day*. Plus, it's anti-inflammatory and restores my often-stressed-out skin to its healthy balance—all with just a few, hand-picked ingredients of the highest quality in a minimalist formulation."

Have fun with it,

*Please note that the product does not replace sunscreen.

Customer Reviews

Based on 8 reviews
L. H.
Sehr schön !

Das ist wirklich ein sehr schönes Serum ! Ich bin echt begeistert!!

Asieh Schmalstieg
Samtig weiche Haut

Das Öl Serum ist einfach ein Traum! Es gleitet toll auf die Haut, ein paar Tropfen genügen und die Haut wird richtig zart. Der Duft ist ganz dezent und überhaupt nicht aufdringlich. Man merkt einfach den Unterschied in der Qualität zu einem wasserbasiertem Serum. Meine Haut ist schon etwas ebenmäßiger geworden. Definitiv ein Luxusprodukt, man hat aber auch lange etwas davon. Ich denke, das es selbst für jemanden, der Hautöle nicht unbedingt mag, auch ein Gewinn ist, weil es nicht wie viele andere einen intensiven Film hinterlässt, sondern schön einzieht und die Haut trotzdem toll gepflegt hinterlässt!

Liebes ruhi Team, merci für die tollen Produkte und bitte weiter so!

Natalie Fuchs
Mehr als unglaublich

Ruhi benutze ich seit ca. 1 1/2 Jahren. Ich (40+) habe mit Bakuchiol angefangen und 2 Fläschchen bereits beim Morgen- & Abendritual, sowie bei den Gesichtsmassagen verwendet.
Vitamin C Oil Serum hat mich bei der Beschreibung neugierig gemacht. Ich habe es gekauft und bin sehr überrascht, wie weich und zart meine Haut innerhalb einer Woche geworden ist. Dabei keine Rötungen, Pickel, kein spannen oder schälen der Haut, also wirklich auch für empfindliche Haut super geeignet. In Kombination mit The Obsidian Gua Sha & The Rose Quartz Gua Sha verjüngt sich die Haut sichtbar und schnell.

Gepflegte, strahlende Haut

Benutze das Vitamin C Öl seit ein paar Wochen und bin wirklich sehr zufrieden mit dem Ergebnis. Die Haut wirkt gepflegt und strahlt schön. Kann das Gesichtsöl sehr empfehlen.

Inge K.
Vitamin C Oil Serum

Nachdem ich mit dem Bakuchiol Oil Serum so zufrieden bin, habe ich mir das Vitamin C Serum gegönnt. Einfach klasse kann ich nach kurzer Zeit schon sagen. Muss kein Vitamin C Serum mehr separat vor dem Pflegeöl auftragen. Spart Zeit am Morgen.
Für mich ist dieses Pflegekonzept von ruhi sehr gut ausgeklügelt und die Inhaltsstoffe sind einfach spitze. Morgens das Vitamin C Serum oil und abends das Bakuchiol Serum oil, also Retinol auf pflanzliche Art. Wie es sein sollte. Ich habe viel probiert, aber ruhi hat mich überzeugt. Ich kann sehen wie gut es meiner Haut tut, jeden Tag.
Die Kundenbetreung ist sehr kompetent und sehr zuvorkommend. Versand und Abwicklung der Bestellung ebenfalls. Ich bin sehr angetan und fühle mich in besten Händen. LG

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