This is not the one I use. I use the innisfree Anti pollution one. It is a sunscreen & a mist for me

Once or twice a week

Twice or thrice a month followed up by Nature Republic's Aloe vera gel

When my skin needs claming down

Mostly when my skin is dry and needs some balancing

3-4 times a week

When I have red or pus filled active acne

Nothing is better than this.