Paragraph match score 81.3%
Page A-038
Best face serum for 40s skin plus uneven tone plus dry skin in winter dryness
For visible tone and texture changes, expect quick wins in hydration and glow within days, and more gradual improvements in uneven tone over several weeks with consistent use and sun protection.
Page A-070
Common questions about serums for wrinkles and dark spots
Hydration and glow can improve within days to a couple of weeks, especially with formulas rich in humectants and barrier-supporters. Texture, fine lines and pigmentation are slower: you are usually looking at 4–12 weeks of consistent use, plus strict sun protection, to judge whether a serum is helping your skin. [2]