His acne is not severe, at least it does not appear to be. It certainly isn't acne rosacea. Lamen's terms; give him product names and less chemicals in products. Products containing these are all over drugstores sure - give him product names to look for. Telling a 14 year old to find a chemical exfoliation product and a benzoyl peroxide wash isn't really helping them. Rubbing alcohol clicked because it is a common product name, akin to household peroxide, bleach, and possibly witch hazel in how commonly known they are. While you may know how to compare such products easily, he may not. It may appear like gibberish to him and simply cause frustration.
While I'm not a dermatologist and cannot for certain say that he has severe acne, it's obviously not minor. He's welcome to do research on products with these chemicals if he's really frustrated about his acne, almost every acne product in the drugstore will have one of these ingredients. Either way, some recommendations:
2% salicylic:
Stridex,
Neutrogena (it says it's a lotion, but I've used it and it's a bit drying on my oily skin)
Benzoyl peroxide:
wash (tbh a regular facial cleanser will be just as good if you use a treatment),
treatment Yes, I realize none of these options are as cheap as rubbing alcohol, but there is a chance rubbing alcohol will irritate the skin, and make acne worse. Treating acne isn't cheap for everyone, since everyone has different skin and may need different products. Salicylic acid and benzoyl peroxide are generally recommended for the treatment of acne over rubbing alcohol as there is generally less irritation. With that being said, not everyone needs all the things I've mentioned, usually a simple face wash, salicylic acid treatment, and moisturizer will work just fine. Or if rubbing alcohol works for him then he can just use that.
My gripe about rubbing alcohol being bad for the skin comes from the fact that it's irritating and possibly not as effective as established acne products. My opinion is that it's better to treat skin issues starting with gentle but effective treatments, instead of using things that are irritating/possibly damaging to the skin.