Squalane + Vitamin C Rose Firming Oil — Reddit Reviews
by Biossance
Updated October 29, 2026
Squalane and vitamin C oil for dewy hydration and plumper-looking skin; percentage undisclosed.
What the community says
This squalane oil pairs tetrahexyldecyl ascorbate with a rich, dewy finish for dry-weather routines, gua sha, or slugging. Dehydrated and combination skin gets the most from it; shoppers needing a disclosed vitamin C strength should skip it.
What this means for you
What people love
Product details
Skin Type
Product Traits
Skin type data limited
Where to buy
What the science says
Hyperpigmentation
Some evidence
Vitamin C: 9 studies tested it directly. See all 19 studies
What the studies found
- Most studies found vitamin C helped fade dark patches, especially melasma
- It often worked better than a placebo when put on the skin for melasma
- Used with microneedling or peels, it often improved dark patches more
- Some studies found it worked about as well as other dark-spot treatments, not better
- The side effects were usually mild and brief
Anti-Aging
Some evidence
Vitamin C: 4 studies tested it directly. See all 12 studies
What the studies found
- All 4 studies that tested it directly found it helped with signs of aging
- It improved the look and texture of sun-damaged skin more than a placebo
- It helped smooth wrinkles, roughness, crow’s-feet, and uneven skin tone
- It did not clearly beat a placebo for how much water the skin held
- No irritation or sensitivity was reported in one study
Research context, not treatment advice. Studies are about the ingredient, not necessarily this exact product.
Real Reddit threads — 10 mentions across 7 threads
Biossance Squalane + Vitamin C Rose Firming Oil on Reddit, in one place — 7 threads from r/30PlusSkinCare, r/Rosacea and 2 more, summarized.
“Biossance - $74 / 1 oz - "Squalane + Vitamin C Rose Oil”
Mentioned
“*THDA percentage not disclosed, but 2nd on ingredients list after Squalane”
Mentioned
“Percentage not disclosed”
Mentioned
“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 vitamin c rose oil is great.”
Positive
“There are mini sets for $25 that include this.”
Positive
“It lasts a long time.”
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
