Succinic Acid is quite rare for me because this is the first time I used this ingredient. The pad is quite soft - but not the softnest like the other pad that I've tried. Eventhough I like to use on the embossed side every two days, my skin never gets irritated by that. The formulation is nice, gently exfoliate my skin and helps to control my sebum. It also helps to soothe my skin especially on the hot sunny days. I usually use this after cleansing and guess what I can still see the impurities on the pad. My skin is prone to whitehead, this pad really helps me to deal with it. It helps to unclog it. No more bumpy skin ❤️