A 50% TCA peel is a relatively strong chemical peel, far more powerful than anything you should do at home. I don't even know how you could gain access to this as it should only be performed by a qualified doctor in an office seeting.
TCA in general is a medium depth peel when used in average concentrations. When TCA 50% is used, it would mimic a deep peel.
All medium and deep depth peels should be done under the supervision of a physician to avoid the side effects. The side effects would vary from hypopigmentaation to a full thickness skin burn with resulting scar formation.
This is a very strong peel and I would highly advise that you do not perform this peel at home.
It may seem decepetively simple to do but there are many potentially disaster scenarios that could result and I don't even want to guess what could happen.
This is a high potency peel that if applied to thinner skin, could result in a full thickess injury with the prospect of permanent scarring.