This \"spot-only\" serum effectively eliminates the remaining spot and its trace while its natural salicylic acid and encapsulated tea tree intensively prevent a secondary infection after removing spots.he serum delivers micro-capsuled tea-tree and anti-bacterial peptides to ease the acne spot after the pus is removed.The serum helps to control irritation and scarring. If it is applied for acne comes up, it stops further infection and if it is applied after removing the pus, it helps to recover scarring.