Squalane + Vitamin C Rose Firming Oil — Reddit Reviews
by Biossance
Updated October 8, 2026
THD vitamin C and squalane for glow and slugging; rose-scented and rich.
What the community says
A face oil built around squalane and tetrahexyldecyl ascorbate, with rose extract and fragrance allergens in the mix. People with dry or rosacea-prone skin use it for slugging and morning glow, while oily or fungal-acne-prone skin may hate the richness.
What this means for you
What people love
Watch out for
- Rose oil fragrance means geraniol and citronellol are in play
- Can feel too rich for oily or fungal-acne-prone skin
- Old bottles get side-eyed for face use
Product details
Skin type data limited
Where to buy
What the science says
Hyperpigmentation
Some evidence
Vitamin C: 7 studies tested it on its own. See all 24 studies
What the studies found
- Most studies found vitamin C helped fade dark patches or spots
- Studies in melasma found vitamin C on the skin made patches look lighter over time
- Used with other treatments, vitamin C often faded dark patches more than the other treatment alone
- Vitamin C worked about as well as glycolic acid for fading dark patches in melasma
- One study in sun spots found only weak fading, with mixed results across different skin-darkness scores
Research context, not treatment advice. Studies are about the ingredient, not necessarily this exact product.
Real Reddit threads — 7 mentions across 5 threads
Biossance Squalane + Vitamin C Rose Firming Oil on Reddit, in one place — 5 threads from r/Rosacea, r/tretinoin and 1 more, summarized.
“I then decided to try pure 100% Squalane from Biossance”
Positive
“and saw my skin change OVERNIGHT”
Positive
“For the first in 10 years ... I don’t have a single pimple or white head on my forehead and no sign of rosacea on my cheeks.”
Positive
“Purito oat in gel cream mixed with biossance squalane,”
Positive
“Purito oat in gel mixed with biossance squalane,”
Positive
“Sure - so my whole routine is :”
Positive
“Also their Squalane + Vitamin C Rose Oil in the morning”
Positive
“I have combo skin and both the above absorb beautifully, and make my skin look and feel hydrated without getting greasy.”
Positive
“Pretty much everything I’ve tried from Biossance agrees with my skin very well.”
Positive
“Biossance Squalene if the weather is dry”
Positive
“Biossance Squalene if the weather is dry or for gua sha”
Positive
“omg when I use it my skin is so plump and happy, the aforementioned fine lines basically disappear”
Positive
“I think Sunday Riley C.E.O. 15% Vitamin C Brightening Serum and Biossance Squalane + Vitamin C Rose Oil are going to be the closest things”
Mentioned
“The other THD Vitamin C serums don't have squalane.”
Mentioned
“Biossance Squalane + Vitamin C Rose Oil are going to be the closest things”
Mentioned
