Vitamin C ∙ Ascorbic Acid

Time Frame	Effect of Vitamin C in Skincare	Suitable Skin Types
1 week	Improved hydration, smoother and brighter complexion; initial reduction in redness and puffiness.	All skin types, including sensitive and dry
2–4 weeks	Noticeable fading of dark spots and early hyperpigmentation; enhanced radiance and more even skin tone.	All skin types
4–8 weeks	More even skin tone, visible brightening, reduced redness and hyperpigmentation; initial improvements in skin texture.	All skin types, especially those with dullness or discoloration
8–12 weeks	Increased collagen production, reduced fine lines and wrinkles, firmer skin, and significant anti-aging benefits.	All skin types, including mature skin