Squalane + Vitamin C Rose Firming Oil — Reddit Reviews
by Biossance
Updated September 23, 2026
THD vitamin C and squalane oil for glow and slugging; pricier but plush.
What the community says
A squalane-and-THD vitamin C facial oil that people use for morning glow, slugging, and sealing moisturizer. Best for combo, dry, or rosacea-prone skin that likes oils; it can feel unnecessary if you want true hydration.
What this means for you
What people love
Watch out for
- Doesn't fix dehydration on its own
- Can feel too rich if you hate oils
- Old bottle? some users wouldn't trust it on face
Product details
Skin Type
Values
Product Traits
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 spots or patches
- Most studies in melasma found it made patches look lighter over time
- It worked about as well as glycolic acid in one study
- One study found only weak fading, and one dark-spot measure did not beat a placebo
Research context, not treatment advice. Studies are about the ingredient, not necessarily this exact product.
Real Reddit threads — 8 mentions across 6 threads
Biossance Squalane + Vitamin C Rose Firming Oil on Reddit, in one place — 6 threads from r/Rosacea, r/30PlusSkinCare and 2 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
“I love the biossance squalene.”
Positive
“It's plant based, not too expensive, and lasts a really long time.”
Positive
“You can also seal it in with moisturizer.”
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
