Tinosorb® S (UV Filter) – Bemotrizinol Powder

Description

Tinosorb® S (Bemotrizinol) is a cosmetic-grade UV filter commonly used by formulators in sunscreen and sun-care product development. It is valued for its stability, compatibility with various formulation types, and ability to remain effective across a wide UV range.

Tinosorb S (Bemotrizinol) is a next-generation, broad-spectrum, oil-soluble UV filter designed for modern sunscreens and daily UV protection products. It provides exceptionally strong, stable, and long-lasting defense against both:
• UVA (320–400 nm)
• UVB (280–320 nm)

It is considered one of the most photostable UV filters in the world, maintaining its protective ability even after hours of sun exposure. Unlike older UV filters, Tinosorb S does not degrade into harmful radicals, does not irritate skin, and provides smooth, elegant sunscreen textures.

KEY FEATURES & WHY IT IS SUPERIOR

✔ Extremely Broad-Spectrum Protection

Blocks both short and long UVA + full UVB range.

✔ Highly Photostable

Does NOT break down in sunlight.
When combined with other filters (Uvinul A Plus, Tinosorb M), it increases overall photostability.

✔ Boosts SPF & PA Strongly

Just small amounts (1–3%) drastically increase SPF values.

✔ Safe & Gentle

Non-irritating, non-sensitizing, ideal for sensitive skin and daily use.

✔ Oil-Soluble

Perfect for creams, lotions, gels, and emulsions.

✔ Excellent Compatibility

Works well with most UV filters including Octocrylene, Uvinul T150, Uvinul A Plus, Tinosorb M, etc.

✔ Elegant Feel

Improves spreadability, does not leave white cast, suitable for all skin tones.

MODE OF ACTION (SCIENTIFIC EXPLANATION)

Tinosorb S protects the skin through two simultaneous mechanisms:

A. Absorption of UV Light

It absorbs harmful UVA and UVB photons and converts them into harmless, non-damaging heat.

B. Scattering & Reflection (minor effect)

Its molecular structure helps scatter a small portion of UV radiation, adding extra protection.

Photostability Advantage

Unlike Avobenzone (which degrades easily), Tinosorb S remains stable and protects other filters from degradation.

BENEFITS INCLUDES

Broad-Spectrum Protection
• UVA1 (340–400 nm)
• UVA2 (320–340 nm)
• UVB (280–320 nm)

Strengthens SPF & PA rating

Increases both UVB protection (SPF) and UVA protection (PA+++/++++).

Highly Photostable

Does not break down in sunlight → long-lasting protection.

Gentle & Non-Irritating

Suitable for:
• Sensitive skin
• Acne-prone skin
• Daily face sunscreens
• Kids (depending on region regulations)

Improves texture

Gives smooth, non-greasy, non-chalky finish.

Anti-photoaging support

By blocking UVA1 (which penetrates deeply), it prevents:
• Collagen breakdown
• Wrinkles
• Sunspots
• Melasma worsening

INGREDIENT INFORMATION

CAS No: 187393-00-6
INCI: Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine (Bemotrizinol)
Percentage Purity: 99%
Colour & Appearance: Off-white to pale yellow powder
Recommended Usage Rate: 2% – 10% 
Solubility: Oil-soluble (Easily disperses in emulsion oil phases)                   Best solvents:
• Caprylic/Capric Triglyceride
• C12–15 Alkyl Benzoate
• Isoamyl Laurate
• Ethylhexyl triazone compatibility is excellent
Stable in pH Range: 5.0 – 8.0 (it requires no strict pH control, as long as pH stays within normal skincare ranges)
Mixing Method:
 • Add to the oil phase                                                                                                                                       • Heat gently until fully dispersed                                                                                                                 • Heat-resistant up to 80–85°C                                                                                                                     • Avoid excessive temperatures to preserve stability.
• Must be emulsified properly for smooth finish

COMPATIBILITY

Compatible with:

✔ Uvinul A Plus (Diethylamino Hydroxybenzoyl Hexyl Benzoate)
✔ Uvinul T150
✔ Octocrylene
✔ Tinosorb M
✔ Zinc Oxide (in hybrid formulas)
✔ Methylene bis-benzotriazolyl tetramethylbutylphenol
✔ Avobenzone (and improves stability)

Avoid with:
✖ Extremely low pH (<4)
✖ Water-only systems

APPLICATIONS

Perfect for creating:
• Face & body sunscreens
• Hybrid sunscreens (mineral + chemical)
• High SPF 50–100 sunscreens
• Daily moisturizers with SPF
• Anti-aging sun-protective creams
• Water-resistant sunscreen products
• Sunscreen gels & fluids

SAFETY PROFILE

✔ Non-irritating

✔ Non-sensitizing

✔ Non-hormonal

✔ Safe for daily long-term use

✔ Very low skin penetration

Studies show it remains mostly on the skin surface, offering excellent safety.

WHY FORMULATORS LOVE TINOSORB S
• No white cast
• Works for all skin tones
• Boosts SPF without heaviness
• More stable than Avobenzone
• Enhances cosmetic elegance
• Compatible with nearly all filter

Packaging:

Our powders are packed in waterproof zip-lock pouches to avoid spillage.

Recommended Storage:

• Store in cool, dry place away from direct sunlight and moisture
• Protect from heat above 50°C
• Keep container / zip-lock pouches tightly closed                                                                          (Current lot will expire August 2028)

DISCLAIMER:

• DAKITZ NATURAL PRODUCTS are for cosmetic and personal care formulations and are meant for external use only, unless otherwise stated.

• This information is not intended to diagnose, treat, cure, or prevent any condition.

• Ingredient usage must follow your region’s cosmetic regulations.

• Kindly research, test, and understand ingredients before purchasing.

• If you’re not advanced in formulating, we recommend working with a chemist or professional formulator.