Professional-C Serum — Reddit Reviews
by Obagi
Updated September 20, 2026
15% vitamin C serum that sinks in fast; can sting sensitive skin.
What the community says
A 15% vitamin C serum with ascorbic acid and ascorbyl glucoside that people use for morning brightening and spot-fading. The texture sinks in cleanly, but alcohol denat. plus fragrance make it a gamble for reactive skin.
What this means for you
What people love
Watch out for
- Alcohol denat. and fragrance can sting
- Citrus oils and fragrance allergens add irritation risk
- Not a safe bet for very reactive skin
Product details
Key Ingredients
Skin type data limited
Where to buy
Real Reddit threads — 7 mentions across 3 threads
Obagi Professional-C Serum on Reddit, in one place — 3 threads from r/30PlusSkinCare and r/AsianBeauty, summarized.
“obagi, either 15% or 20%.”
Positive
“It feels great and sinks in so well.”
Positive
“have continued using Obagi for the past 3 years. The best.”
Positive
“I use obagi 15% Vit C serum and it never makes me react.”
Mentioned
“I have rosacea and sensitive skin too.”
Mentioned
“Could be the combo or a personal sensitivity to an ingredient”
Mentioned
“Vitamin C : Obagi C Serum”
Mentioned
“Best Vitamin C for DRNW skin type”
Mentioned
“Look for recommendations.”
Mentioned
