看成分，要避免retinoids or salicylic acids，成分上只要包括以下任何一个，就别用了：
<br/>Differin (adapelene)
<br/>Retin-A, Renova (tretinoin)
<br/>Retinoic acid
<br/>Retinol
<br/>Retinyl linoleate
<br/>Retinyl palmitate
<br/>Tazorac and avage (Tazarotene)
<br/>
<br/>Salicylic acid
<br/>Beta hydroxy acid
<br/>BHA
