There is no obvious difference in composition and efficacy between the square and round versions of Fu Mei mask, but there are some differences in the use experience.

1. shape: the square mask needs to be cut by itself, and the round mask does not need to be cut. The round mask is more convenient.

2. Nutrients: Coveme mask contains collagen, which has a good effect on skin repair after medical treatment. However, the round mask also contains a liquid dressing, which can provide additional cooling and hydrating effects for the skin. The round mask may be better than the square mask in the richness of nutrients.

3. Price: Because the round mask contains more ingredients, its price is usually higher than that of the square mask. If consumers are sensitive to price, they can choose a square mask with lower price.

To sum up, there is no difference in efficacy between the square and round versions of the mask, but there are differences in ease of use and nutrients. The specific shape of the mask you choose depends on your personal needs and budget.