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Different functional ingredients have different onset concentrations, which cannot be completely judged according to "1%, so what are the effective concentrations of the major functional ingredients?

1. Niacinamide

Niacinamide is generally used in whitening skin care products. The concentration of niacinamide can improve pigmentation at 2%-5%, and the effect of 5% niacinamide to brighten skin will be stronger.

Note: Tolerance needs to be established from low to high

2. Sodium Hyaluronate

Hyaluronic acid is a mucopolysaccharide with very good moisturizing ability. The real hyaluronic acid stock solution, even if the form is very thick, is likely to contain less than 1% of hyaluronic acid. Hyaluronic acid is usually added to 0.1% to be effective, and 0.3% will have a good effect.

3. Retinol

Retinol can accelerate the production of collagen. It is generally used in anti-aging skin care products. The addition amount of 0.08% is enough to make vitamin A play an anti-aging effect. Daily use is usually about 0.3%. This concentration ensures that the effect is not too much. violent.

Note: Build tolerance from low to high, use at night

4. Polypeptides

Peptides can effectively eliminate static lines and firm the skin, and are generally used in anti-aging skin care products. For example, acetyl hexapeptide-8, a 2% polypeptide solution can significantly reduce the effect of wrinkles. 3% palmitoyl pentapeptide solution is approximately equivalent to the efficacy of 0.07% vitamin A, it is best to choose more than 3% palmitoyl pentapeptide solution.

5. Vitamin C

Vitamin C is the most familiar whitening ingredient. 5% of vitamin C can achieve the effect of whitening and anti-oxidation. 20% is a critical point, and the effect will not be improved if the concentration is increased after that.

Note: It is necessary to pay attention to the active stabilization technology of vitamin C

6. Vitamin E

Vitamin E is a common antioxidant that protects the skin from free radical damage. Vitamin E with a concentration of 0.1%~1% can have antioxidant effects, and it can be used together with vitamin C to enhance the effect.

For example: 1% vitamin E combined with 15% vitamin C can have the effect of 1+1>2, which has a better antioxidant effect.

7. Resveratrol

Resveratrol is a good antioxidant ingredient, and resveratrol at a concentration of less than 1% has an antioxidant effect.

Note: Resveratrol is unstable in structure, pay attention to select products with stable packaging technology and emulsification technology ingredients

8. Ceramide

Ceramide is a natural ingredient that exists in our skin, which plays an important barrier and moisturizing role. Generally, only about 0.1-0.5% is effective, so it ranks low in the ingredient list.

9. Acids

Salicylic acid can bring many benefits such as exfoliation, acne, blackheads, whitening, etc. It is necessary to start with a low dose and gradually increase the dose and frequency. It is recommended to use fruit acid products at a concentration of about 4-5%. For example, glycolic acid is generally used at a concentration of 4%-8%; fat-soluble mandelic acid can be used at a concentration of 10%.

Salicylic acid can work at low concentrations, generally 0.5%-2% concentration.

Note: Sensitive skin with weak stratum corneum is not recommended for large-scale use