I am curious if you use functional cosmetics every day.

Lately, I have been using a high-concentration niacinamide product for whitening, wrinkle reduction, and pore management.

I applied it for the first time and it wasn't irritating, and the next day I could really feel a smooth and firm texture, so I thought it was really good.

So, in terms of a week, I use it for three days in a row, or I use it every day except for one.

If I don't have any skin issues with functional cosmetics, can I use them every day?

Of course, I am a bit worried about the price of a bottle,

I'm wondering if I can keep using it like this for a whole week if I like it and see results.

And right now I'm using niacin with a focus on whitening and pores,

I'm thinking of trying an ampoule for managing melasma.

Should I use this alternately every other day?

I'm planning to just stick to a refreshing and soothing care routine throughout the morning.

I plan to use it every other day in the evening. I'm thinking of using Naicine in the morning and the melasma ampoule in the evening.

I am curious whether you use functional cosmetics every day or every other day.