10% Vitamin C + E Ferulic Acid Serum — Reddit Reviews
by Timeless
Updated October 30, 2026
10% L-ascorbic acid brightening serum; irritation and sharpie-like odor divide users.
What the community says
A 10% L-ascorbic acid serum paired with alpha tocopherol and ferulic acid for morning brightening, especially when stronger formulas sting. It layers easily under moisturizer and sunscreen, but reactive or tretinoin-irritated skin may develop redness, tackiness, or breakouts.
What this means for you
What people love
- 10% L-ascorbic acid starter strength
- Ferulic acid plus alpha tocopherol antioxidant pairing
- Thin liquid for morning layering
Watch out for
Product details
Product Traits
Key Ingredients
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
Studied at 3–30%this product: 10%
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
Studied at 5–10%this product: 10%
Research context, not treatment advice. Studies are about the ingredient, not necessarily this exact product.
Real Reddit threads — 35 mentions across 26 threads
Timeless 10% Vitamin C + E Ferulic Acid Serum on Reddit, in one place — 26 threads from r/tretinoin, r/SkincareAddiction and 2 more, summarized.
“AM: • Timeless 10% Vitamin C serum”
Positive
“I use the same products for PM above ^ minus the Vitamin C and SPF.”
Positive
“Sure! I mostly use the same AM and PM products.”
Positive
“Timeless 10% Vitamin C Serum”
Positive
“Timeless Vitmin C serum, crvaVe PM, and Beauty of Joseon sunscreen, are great for you”
Positive
“Here are some of my favorites so far from my new lineup:”
Positive
“-Timeless 10% Vitamin C Serum”
Positive
“I also love the Timeless 10% Vit C!”
Positive
“Timeless Vitamin C”
Positive
“Timeless Vitamin C + E Ferulic Acid Serum”
Positive
“you’d likely have to stop the vitamin c and AA for a couple of months”
Positive
“Morning - Timeless Vitamin C + E Ferulic Acid Serum”
Positive
“I use the Timeless 10% vitamin c serum because I want the L Ascorbic acid but can’t tolerate the 15% and 20% products.”
Positive
“Timeless 10% Vitamin C Serum”
Positive
“Here are some of my favorites so far from my new lineup:”
Positive
“I finally bought some timeless vitamin c this week”
Positive
