20% Vitamin C + E Ferulic Acid Serum — Reddit Reviews
by Timeless
Updated August 19, 2026
20% L-ascorbic acid serum brightens skin and fades hyperpigmentation; can irritate.
What the community says
A 20% L-ascorbic acid vitamin C serum with vitamin E and ferulic acid for antioxidant and brightening effects. Often used in morning routines, it works best on dull, uneven skin but can trigger irritation or breakouts, especially on sensitive or acne-prone skin. Those with compromised barriers should approach cautiously.
What this means for you
Backed by 30 threads from r/SkincareAddiction, r/30PlusSkinCare and 4 more.
Read the threads ↓What people love
- High 20% L-ascorbic acid concentration for effective brightening
- Includes vitamin E and ferulic acid for antioxidant boost
- Packaging limits oxidation to maintain potency
Watch out for
- May cause redness and irritation, especially on sensitive skin
- Can break some people out or worsen acne-prone skin
- Strong citrus scent disliked by some users
Product details
Use caution
Values
Product Traits
Key Ingredients
Where to buy
Real Reddit threads — 276 mentions across 30 threads
Timeless 20% Vitamin C + E Ferulic Acid Serum on Reddit, in one place — 30 threads from r/SkincareAddiction, r/30PlusSkinCare and 4 more, summarized.
“Timeless vitamin C serum has been working well for the past 6 weeks or so.”
Positive
“I have acne prone skin and TO vit C in silicone broke me out and gave me clogged pores.”
Positive
“That could be just me. Timeless vitamin C serum has been working well for the past 6 weeks or so.”
Positive
“i’ve always had issues with the pump on the Timeless Vitamin C”
Positive
“My sensitive skin reacted badly to the Timeless Vitamin C. It was way too harsh for my skin barrier.”
Positive
“I use Timeless in the morning and tretinoin at night and my dark patches have faded like 70% in a year.”
Positive
“so I’m going to suggest Timeless Vitamin C.”
Positive
“This is why of all the dupes I've explored, I prefer the Timeless Vitamin C.”
Positive
“Timeless switched to an airtight pump bottle and I HATE it. The product leaks every single time.”
Positive
“This is stupid expensive though so I’m going to suggest Timeless Vitamin C.”
Positive
“I like that it comes in an airless pump that prevents oxidation over time.”
Positive
“That’s why I really like the timeless.”
Positive
“I’ve consistently used timeless vitamin c but stopped once I began tret to adjust.”
Mentioned
“Not sure when to implement it back..”
Mentioned
“Did you introduce vitamin c right away?”
Mentioned
“Would you mind sharing what vitamin C and copper peptide cream you're using?”
Positive
“I use Timless vitamin c and TOSOWOONG Copper Peptide cream!”
Positive
“Great results! Where do you buy the serum from?”
Positive
