In dono ko ek saath use karne se skin ka natural moisture kam ho sakta hai aur irritation zyada ho sakta hai, isliye dono ko alag-alag din par use karna better hai.
Ek din BHA use karo, doosre din retinol use karo, ya phir BHA ko AM routine mein aur retinol ko PM routine mein lagao.
Bharat ke garam aur humid climate mein jyadatar log ke paas oily aur acne-prone skin hota hai, isliye in dono ingredients ko slowly introduce karna zaroori hai taaki skin ka protective barrier damage na ho.