Toner
Toner — a water-based liquid applied after cleansing to prepare, hydrate, or treat the skin depending on its formulation. Modern toners have moved beyond the astringent, alcohol-heavy versions of the past and now range from hydrating and soothing to gently exfoliating.
Key points
- Toners are applied after cleansing and before serums or moisturizers.
- They can be hydrating, balancing, soothing, or exfoliating depending on their ingredients.
- Older astringent toners relied on alcohol, while many current formulas focus on hydration and barrier support.
- A toner is an optional step that can be tailored to individual skin needs rather than a mandatory one.
Frequently asked
Is a toner a necessary skincare step?
Toner is optional; it can add hydration or targeted benefits, but a solid routine of cleanser, moisturizer, and sunscreen works well without one.
How do I apply toner?
After cleansing, apply toner with clean hands by patting it in or with a cotton pad, then follow with your serums and moisturizer.
Related topics
This is a foundational entry in the SYNC Skin Encyclopedia and is expanded over time. Educational information only — not medical advice.

