certain products may contain preservatives or fragrances that can cause hypersensitivity or an allergic reaction on your skin. also if you are using products that contain tretinoin aha or salicylic acids your skin may become more sensitive when exposed to direct sunlight. therefore it is important to incorporate a sun block within your skin care regimen.
i'm 55 years old. my skin is becoming more sensitive to skin care products. can skin become sensitive over time?