Just about anything! This is my morning routine:
- Wash with a chemical exfoliator (AmorePacific Treatment Enzyme peel) or a cream cleanser
- After skin is dry I apply the Collagen Booster & wait about 5 minutes for it to fully sink in
- Apply moisturizer with SPF wait a few minutes
- Primer if needed (if It's a long day I wear primer...) wait a few minutes
- Foundation/ Tinted Moisturizer/BB or CC Cream
While I wait for the products to sink in I work on the rest of my makeup like eyes & brows.
Recommendation is Truth cream if you've got dry skin, Sheer Transformation if you've got combination skin. Honestly you can use it under any moisturizer, tho preferably not a retinol one.