When you expose your skin to UVA and UVB, you produce melanin which makes your skin appear darker. Our YW day cream already includes a  SPF 25, while our YW night cream includes a 10 SPF.

Consider that for daily outdoor activities such as going to work SPF 25 is already enough protection from burning rays of the sun, so you do not need to add any extra sunscreen to our YW day cream. Consider that an important thing you can always do to help lightening your skin is protecting your skin from sun everyday. Our YW creams do also this for you.

Anyhow, if you are going to be all day under sun exposure, we suggest you to apply a sunscreen 50SPF to better avoid sun effect and apply our whitening creams only when you are at home in the late afternoon evening.