This product is great for anyone looking for a stronger and effective retinol serum.
It has a great formula and a great value for the product.
I didn't experience any irritation but I'm an experienced retinol user, you may want to cycle use at the beginning of 2x a week and gradually increase
I had alot of trouble with the dropper packaging, the product is too thick so only the smallest amount comes out each time.
If it was changed to a pump bottle, even if they charged more, I would give it a 5 ⭐.