This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Skin
Which of the following is not an agent used in chemical peeling? 
Select and explain. 
A. Glycolic acid, B. Kojic acid, C. Phenol, D. Salicylic acid
B: Kojic acid
Answer: B: Kojic acid 
Explanation: Kojic acid is a fungal metabolite known to inhibit tyrosinase is used as a depigmenting cream. All the others are peeling agents. Ref: Rook's textbook of dermatology, 8th edition, Pg 73.28.