I haven't found anything bad about this yet.

The Dr.G Black Snail Retinol Ampoule combines the benefits of snail mucin and retinol in a gentle, daily-use formula. The smell is amazing but not strong at all. It’s lightweight, absorbs quickly into my skin, and has brought noticeable improvements. My skin feels bouncy, hydrated, and refreshed every morning. I really love it!

the price is a bit high compared to the common ground of other facial cleansers and about the ingredients I find contain artificial ingredients SLS foam (also fortunately not too much). 

After trying it out for about a week from my sister lent it to me, I really liked it and decided to buy it and use it until now, it has been 8 months of use. Wow, I love it! The feeling after washing the skin is very pleasant, not tight, the ability to keep moisture is very good for the skin, the apple scent is mild and not strong. 

Lynngo