Vitamin C vs Retinol: Which Should You Use First?
Two of the most studied ingredients in skincare. The good news: you don't have to choose.
By Sophie Lindqvist · March 4, 2026 · 5 min read
If skincare had a hall of fame, vitamin C and retinol would already be inside it. Decades of research, dermatologist consensus and quiet, persistent results have earned both ingredients their reputation. The question most readers ask us is simply: which do I start with?
What vitamin C actually does
Vitamin C is, first and foremost, an antioxidant. Applied in the morning, it helps neutralise the free radicals generated by UV exposure and pollution. Over time it brightens skin, supports collagen synthesis and softens the appearance of pigmentation.
Look for L-ascorbic acid in concentrations between 10 and 20%, packaged in opaque or amber glass.
What retinol actually does
Retinol — and its prescription cousin, tretinoin — accelerates cellular turnover and stimulates collagen production. It is the single most evidenced ingredient for fine lines, texture and long-term skin quality.
Use it at night, two to three times a week to start, on dry skin, and follow with a barrier-supporting moisturiser.
So which goes first?
Both. Vitamin C in the morning under SPF; retinol at night. They are complementary, not competitive — vitamin C protects from daytime damage, retinol repairs and renews while you sleep.
- Morning: cleanser, vitamin C serum, moisturiser, SPF
- Evening: cleanser, retinol, moisturiser
- Introduce one new active at a time, and give your skin four to six weeks before judging
Used together, vitamin C and retinol form the most reliable, evidence-based pairing in modern skincare. Start low, stay consistent, and let time do the rest.
