How Do I Introduce a New Active?
How Do I Introduce a New Active? — the general approach is to add one product at a time and start with a low frequency, giving your skin time to adjust before increasing use. Patch testing first and building up gradually helps you spot any reaction and identify which product is responsible.
Key points
- Introducing a single new active at a time makes it easier to pinpoint the cause of any reaction.
- Starting with once or twice a week and slowly increasing lets the skin build tolerance.
- A patch test on a small area before full-face use can help flag sensitivity in advance.
- Pairing a new active with a gentle, supportive routine and daily sunscreen reduces irritation risk.
- Waiting a couple of weeks before adding another new product helps keep the routine manageable.
Frequently asked
How do I patch test a new active?
Apply a small amount to an inconspicuous area, such as the inner forearm or behind the ear, and watch for irritation over a day or two before using it on your face.
What if my skin reacts to a new product?
Pause the product, focus on gentle hydration and barrier repair, and reintroduce it more slowly or discontinue it if irritation persists.
Related topics
This is a foundational entry in the SYNC Skin Encyclopedia and is expanded over time. Educational information only — not medical advice.
