What strength of Retin-A should I get?
Retin-A is available in many different strengths. The most common are 0.01%, 0.025%, 0.05%, and 0.1%. Most people using it use 0.025% or 0.05%. Since Retin-A can cause skin irritation depending on percent, many people use 0.025%. Also, some studies have shown that 0.1% is only MINIMALLY more effective than 0.025% or 0.05% but caused a lot more irritation. Retin-A that is too strong and irritating can cause hair to fall out and damage the follicle, so it is important not to use too strong of a strength.
