Bemotrizinol is an organic sunscreen (Organic Sunscreen or Chemical Sunscreen) that can protect against UVA/UVB light in the wavelength range of 290-370 nm. It can work well with other types of sunscreen and is highly stable under sunlight.

(The company provides free SPF measurement services if you use this ingredient in your sunscreen product formula.)

BEMT (Bemotrizinol) or popularly known by the trade name Tinosorb S

(The company sells BEMT in a water-soluble form that is easy to use, provides high SPF/UVAPF, and has a light texture.)

Organic sunscreen (Organic Sunscreen or Chemical Sunscreen) that can protect against UVA/UVB light in the wavelength range of 290-370 nm can work well with other types of sunscreen and is highly stable under sunlight. There is no problem of deterioration when exposed to sunlight like Avobenzone.

BEMT is used in expensive, high-end sunscreen products because it is highly effective and stable in protecting against UVA/UVB light. It is recommended to use DHHB only in sunscreen products for the face because it is expensive. For sunscreen products for the body, it is recommended to use Zinc Oxide in high amounts to protect against UVA light because it is cheaper. Although the texture of the product (may be white and difficult to spread) is not comparable to BEMT, BEMT does not cause a white cast.

Summary of BEMT features

- It is an organic sunscreen that can block UVA/UVB well and is highly stable even under sunlight. It does not require other sunscreens in the formula to help increase stability, which is different from Avobenzone , which although it blocks UVA well, has lower stability and requires other sunscreens to help increase stability.

- Can be used with Physical Sunscreen such as Zinc Oxide or Titanium Dioxide without affecting stability, which is different from Avobenzone that cannot be used with Zinc Oxide , Titanium Dioxide and OMC because it will result in Avobenzone lacking stability, resulting in limitations in increasing the SPF and PA values of the formula due to limitations in selecting other ingredients that can help increase the SPF and PA values, especially OMC which is an effective UVB sunscreen.

BEMT is a highly effective UVB specific sunscreen covering UVB/UVA I/II with Specific Extinction E1%/1cm.

FDA regulations on the use of BEMT in any type of cosmetics

Europe (including Thailand): not more than 10%

Japan: Not more than 10%

Products using this ingredient cannot be exported to the US because the US FDA has not yet approved BEMT.

The pH values obtained from BEMT-based formulas are based on market products.

Shiseido Anessa Perfect UV Sunscreen AA SPF 50+ PA+++ (gold bottle)

Ethylhexyl Methoxycinnamate 7.494% Zinc Oxide 8.360% Octocrylene 3.000% Diethylamino Hydroxybenzoyl hexyl benzoate 1.000% Bis-ethylhexyloxyphenol methoxyphenyl triazine (BEMT or Tinosorb S) 0.500% 

Ready-to-use sunscreen products using BEMT (Tinosorb S ) as a sunscreen must not be refrigerated. Refrigeration will reduce the effectiveness of the organic/chemical sunscreen due to recrytalization.

BEMT dissolution in various sunscreens and LipidSoft

Since BEMT is in powder form, the formulation must be mixed with a solvent.

Soluble up to 20% in Octisalate (BEMT 20% in Octisalate 100%).

Dissolves up to 17% in OMC ( BEMT 17% in OMC 100%)

Soluble up to 16% in Homosalate ( BEMT 16% in 100% Homosalate)

Dissolves up to 12% in LipidSoft ( BEMT 12% in LipidSoft 100%)

(This product is not produced by the manufacturer of Tinosorb S but has been tested for purity by HPLC, guaranteeing the purity of the substance is equivalent. In the case of ordering 5kg or more, the company provides a free SPF value test service.)

Usage rate: 1-10% (recommended 2-4% is sufficient for high-performance sunscreen formula, Shiseido Anessa uses only 0.5%)

Appearance: White-yellow powder

Mixing: Dissolve in oil, can withstand heat up to 80 degrees for no more than 30 minutes.

Storage: Store at room temperature, avoid sunlight, shelf life 3 years.

INCI: Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine

Examples of products using BEMT

Shiseido Anessa Perfect UV Sunscreen SPF50 PA++++

(BEMT works with DHHB )

Biore UV Aqua Rich Watery Essence Sunscreen SPF50+ PA+++

(BEMT works with DHHB )