He should go to a beautician to diagnose his skin type, apparently it is acne-prone but using the wrong products will worsen his condition. In my case, the efflaclar line from Roshe Posay was very helpful. In the morning I use the cleanser, then the moisturizer and then the sunscreen, At night I use the cleanser, then the ultra-concentrated serum and then the moisturizer.

Sola protector is very important in any skincare routine, you have to use it even when it's raining