All scans / Face oils / Biossance Squalane + Vitamin C Rose Oil
Biossance Squalane + Vitamin C Rose Oil ingredients: is it worth it?
Pretty, simple, and modestly effective — but this is not a serious vitamin C treatment.

Pretty, simple, and modestly effective — but this is not a serious vitamin C treatment.
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The formula’s efficacy is driven mainly by squalane and a stable oil-soluble vitamin C derivative, but the derivative sits in a short oil base with no supporting brightening system, so the overall brightening/anti-aging payoff is limited rather than transformative.
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DemythSkin rates Biossance Squalane + Vitamin C Rose Oil 3.0/5 for efficacy and 4.2/5 for safety.
CONTAINS COMMON SENSITISERS⌄
Fragrance components and essential oils that more often cause reactions in sensitive skin: Geraniol, Citronellol. Most people tolerate them; patch test if your skin reacts easily.
ACTIVE INGREDIENTS BY TIER
Gold Standards
High clinical proof | Skin-transformativeReliable
Proven resultsPotent
Developing evidenceOverhyped | Marketing
Hype | Limited dataDocumented Irritants
Evidence-backed flagFORMULATION BASE (1)⌄
FULL INGREDIENT LIST⌄
Squalane, Tetrahexyldecyl Ascorbate, Caprylic/Capric Triglyceride, Pistacia Lentiscus (Mastic) Gum, Rosa Damascena Flower Extract, Geraniol, Citronellol
WHAT EACH INGREDIENT DOES (7)⌄
- Squalane
- emollient, skin-replenishing oil
- Tetrahexyldecyl Ascorbate
- oil-soluble vitamin C derivative
- Caprylic/Capric Triglyceride
- lightweight emollient, solvent
- Pistacia Lentiscus (Mastic) Gum
- botanical film former
- Rosa Damascena Flower Extract
- fragrant botanical extract
- Geraniol
- fragrance allergen
- Citronellol
- fragrance allergen
EXTERNAL CITATIONS
Tetrahexyldecyl Ascorbate: Brand product pages describe this as an oil-soluble, stable vitamin C used to brighten and improve discoloration; INCIDecoder also identifies it as the primary antioxidant/brightening ingredient.
Squalane: Brand and third-party sources describe squalane as the main moisturizing, barrier-supporting base.
DISCLAIMER: THIS ANALYSIS IS FOR INFORMATION ONLY. NOT MEDICAL ADVICE. AI-GENERATED DATA BASED ON PUBLICLY AVAILABLE INGREDIENT LISTS. VERIFY WITH A MEDICAL PROFESSIONAL.
Biossance Squalane + Vitamin C Rose Oil: common questions
Is Biossance Squalane + Vitamin C Rose Oil worth it?
Biossance Squalane + Vitamin C Rose Oil scores 3.0 out of 5.0 for efficacy (Mid) and 4.2 out of 5.0 for safety (Gentle) on DemythSkin's independent ingredient analysis. Pretty, simple, and modestly effective — but this is not a serious vitamin C treatment.
What are the key active ingredients in Biossance Squalane + Vitamin C Rose Oil?
Biossance Squalane + Vitamin C Rose Oil contains no gold-standard actives. Its formula is built on supporting and base ingredients rather than clinically transformative actives.
Does Biossance Squalane + Vitamin C Rose Oil contain fragrance or known irritants?
DemythSkin flags these ingredients in Biossance Squalane + Vitamin C Rose Oil as documented irritants: Geraniol, Citronellol.
How is Biossance Squalane + Vitamin C Rose Oil scored?
DemythSkin grades every product on two independent scores: efficacy (whether the ingredients have clinical evidence of working) and safety (irritation and sensitisation risk). Ingredients are graded S through D against a database of over 3,000 compounds. Brand and price are not part of the score, and no brand pays for one.
Free scores for every product in the database, or see them on Sephora, Ulta and Amazon with the Chrome extension.