Retinoids like isotretinoin and adaplene are not your everyday Vitamin A substitutes! They are potent drugs meant for supervised use only. Their use ranges from psoriasis and acne to skin cancers and leukemias. What is more, they have severe side-effects including fetal toxicity, germ cell malformations, and hepatotoxicity. You can't even donate blood for 6-9 months after single use of a retinoid.
So let us stop giving medical advice on taking retinoids from age 20 like they were multivitamins or candies for that matter!
If you want good skin drink 2 liter water daily and drink .5 liter mixed fruit juice
apply some honey on the face for 45 minitues and wash..
also you need money and happiness for good skin. Kareena kapoor recently become beautiful due to money and happiness only... of course she tasted physical love too
retinoids are not supposed to be used routinely. the author who so ever has littl knowledge about retinoids. be carefull about this tip of using retinoids. instead one can use vitamin c applicaps