I used this after toning. This serum helps prep my skin for the essence/serum and moisturizer. I tried both samples of Holika Holika 3 Seconds Starter Collagen (pink) and Hyaluronic Acid (blue).

The Hyaluronic Acid (blue) is light, fast absorbing and non-sticky. This is more for oily skin type.

The Collagen (pink) is more moisturizing, richer and thicker. It’s also fast absorbing and non-sticky. Great for dry and combination skin.

I personally prefer the Collagen one, it’s really leaves my skin smooth and hydrated. Also nice floral scent.