The Ordinary Salicylic Acid 2 Anhydrous Solution. The ordinary salicylic acid 2% anhydrous solution offers salicylic acid in a squalane base to calm skin irritation that can be associated with the use of bhas like salicylic acid. Launching on 7th december, the newbie and will cost just £5.20,. The Ordinary. Salicylic Acid 2 Solution (30ml)…