Do not confuse k-beauty toners with western toners. They have totally different effects.
While k-toners may look like water (without fragrances or colour) they actually typically contain acids like AHA or BHA.
Water has a pH level of 7 (high) and can breed bacteria or lead to excess oil production.
Acid will reduce the pH levels to around 5.5 (ideal)
In short, k-toners balance the pH levels of the face and prevents break outs.
“If skin is not at a balanced pH level, it becomes prone to the cycle of excessive dryness followed by too much oil production, and even environmental damage”
Western brand toners tend to focus more on mild anti-inflammatory properties (witchhazel, rose..) and do not have as high of a concentration of acids.
K-toners are also formulated to support other skincare serums.
K-Beauty toners facilitate active ingredient penetration from your other skin care products. Think of it as a booster for your vitamin C, retinol, or expensive anti-aging creams. After all, in order for a product to work its magic on your skin, it’s got to be absorbed.