Vitamin C Serum 25 FAQs
What makes this serum unique?
What benefits does it provide?
What skin types can use it?
How should I use it?
Can I use it with retinol or acids?
Will it sting or cause redness?
Does it oxidize or turn brown?
Can I use this serum if I have pigmentation concerns?
Does it contain fragrance?
How soon will I see results?
Safety & Tolerance Ratings
Each DCL product is evaluated for Pregnancy Safety (PSE), Non-Comedogenic Index (NCI), and Hypoallergenic Evaluation (HAE). These independent ratings, provided by Milbar Labs, provide transparency and help you choose products with confidence.
This content is provided for educational purposes only and is not a substitute for medical advice. Always consult with your healthcare provider before beginning or changing any skincare routine during pregnancy or breastfeeding. Visit Milbar Labs for thorough Pregnancy Safety Evaluations on all major skincare ingredients.
This content is educational and not medical advice. Pore-clogging risk varies by skin type. For personal guidance, consult your dermatologist. Visit Milbar Labs for thorough Non-Comedogenic Ingredient Evaluations on all major skincare ingredients.
This content is educational and not medical advice. Irritation risk depends on individual sensitivity. Patch test new products and consult a dermatologist for concerns. Visit Milbar Labs for thorough Hypoallergenic Ingredient Evaluations on all major skincare ingredients.
Vitamin C Serum 25 pH Profile:~4.2*
The Vitamin C Serum 25 is formulated at a low acidic pH of 4.2 to optimize the performance of 25% 3-O-Ethyl Ascorbic Acid, a highly stable vitamin C derivative. At this level, the serum delivers strong antioxidant protection, helps brighten uneven tone, and supports collagen production, while soothing agents like hyaluronic acid and ergothioneine maintain hydration and comfort.
*Product pH may vary by ±0.2 due to normal manufacturing tolerance.