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- Apply a pea-sized amount of Oneskin Timeless Treat Retinol 0.5% Vitamin B3 Serum to cleansed, dry skin at night.
- Spread evenly across the face, avoiding the eye and lip area.
- Follow with a gentle moisturizer.
- Use 2–3 times a week initially, then gradually increase frequency as tolerated.
- Always apply sunscreen the next morning.