Retinol and tretinoin are often compared for treating acne, but they have key differences. A 1% retinol serum may seem stronger than a 0.025% tretinoin cream, but the opposite is true. Retinol is available over the counter and promises benefits similar to prescription retinoids with less irritation.

However, retinol and tretinoin are not interchangeable due to their positions in the same chemical pathway. Tretinoin is more direct in its action, whereas retinol requires enzymes in the skin to take effect.

Further details on the differences between retinol and tretinoin are available, explaining why one may be more powerful and effective than the other.