Actives
Actives — the ingredients in a formula that are responsible for producing a specific, measurable effect on the skin, as opposed to the bases, solvents, and stabilizers that carry them. Common examples include retinoids, vitamin C, exfoliating acids, and niacinamide, each targeting concerns like texture, tone, or hydration.
Key points
- They are the functional ingredients credited with a product's targeted results.
- Examples include retinoids, alpha and beta hydroxy acids, vitamin C, niacinamide, and peptides.
- The concentration and formulation of an active influence how effective and tolerable it is.
- Combining multiple potent actives at once can increase the risk of irritation for some people.
Frequently asked
Can you use too many actives at once?
Layering several strong actives can overwhelm the skin barrier and cause irritation, so many people introduce them gradually or alternate them.
Are actives the same as their listed percentage?
Not exactly; the percentage indicates concentration, but formulation, pH, and delivery also affect how well an active performs.
Related topics
This is a foundational entry in the SYNC Skin Encyclopedia and is expanded over time. Educational information only — not medical advice.
