HOW DOES YOUR SKIN REACT TO THE SUN?
Cool skin undertone
Your skin has hints of pink, blue or purple tones.
Your YSL shade will start with BR.
Neutral skin undertone
Your skin has a mixture of both warm and cool tones or you find it difficult to determine a colour.
Your YSL shade will start with B.
Warm skin undertone
Your skin has hints of peach or yellow.
Your YSL shade will start with BD.
