Nutritional supplement highly recommended for those whose nails break easily

It is an American product, and its name is Sally Hansen Nail Growth.

It's a Miracle product.

The condition of the fingernails being bumpy and constantly splitting

Since it persisted, I took collagen and biotin, and also a nail strengthener.

I bought it because I thought I should apply it.

The feel is similar to regular nail polish, and the shine is

There are a few downsides. If there is one, it is that the brush is thin, so it is a bit difficult to apply.

It's uncomfortable.