Boron Nitride yra sintetinis neorganinis materialas, plačiai naudojamas dėl išskirtinių tepamųjų savybių ir „soft-focus“ optinių efektų. Šie mineraliniai milteliai pagerina formulių jutiminį profilį, kartu užtikrindami puikų riebalų sugėrimą ir ilgalaikį išsilaikymą spalvinėje kosmetikoje bei odos priežiūros priemonėse.
- INCI pavadinimas:
- Boron Nitride
- Cheminis / mokslinis pavadinimas:
- Boron Nitride
- Dažni sinonimai:
- White Graphite, BN
| Kategorija: | Tekstūrą gerinantys ingredientai |
| Kilmė: | Sintetinis |
| Komedogeniškumo reitingas: | 0 |
| Pagrindinės pramonės šakos: | Kosmetika, farmacija, aviacija ir kosmosas, elektronika |
| Tirpumas: | Neskaidus (disperguojamas) |
Savybės ir poveikis
| Tekstūros gerinimas: | |
| Sebumo kontrolė: | |
| Formulės stabilumas: | |
| Dirginimo rizika: |
Pagrindiniai privalumai:
- Suteikia odai šilkinį, prabangų pojūtį ir didelį slydimą.
- Išsklaido šviesą, todėl vizualiai sumažina smulkias raukšleles ir netobulumus.
- Padidina biriųjų produktų sukibimą ir išsilaikymo laiką.
- Sugeria odos riebalų perteklių, nepalikdamas sunkumo ar „cakey“ efekto.
Galimos rizikos:
- Įkvėpimo pavojus, jei tvarkomas kaip neapdoroti birūs milteliai (galutiniuose produktuose rizika minimali).
- Gali šiek tiek sausinti itin alipidinės odos asmenis.
Biologinis poveikis ir kosmetinis profilis
Hexagonal boron nitride crystals possess a layered structure similar to graphite, allowing the molecular planes to slide over one another with minimal friction. This specific geometry is responsible for the unparalleled lubricity and smoothness the powder imparts to topical applications. When incorporated into emulsions or pressed powders, these particles fill micro-ridges on the skin surface, creating a more uniform plane for light reflection.Optical performance relies on a refractive index of approximately 1.74, which sits between traditional cosmetic fillers like Talc and opacifiers such as Titanium Dioxide. This specific value enables the material to provide significant „soft-focus” blurring effects without the high opacity or „whitewash” associated with UV filters. Furthermore, the chemically inert nature of the powder ensures it does not react with other active ingredients or degrade under UV exposure.Adhesion represents another critical functional attribute. The plate-like particles exhibit strong affinity for the skin’s lipid barrier, which helps pigment and other powders stay in place throughout the day. While materials like Kaolin or Silica also absorb oil, Boron Nitride manages sebum while maintaining a luminous, rather than strictly matte, finish.
Platesnės taikymo sritys ir kilmė
Manufacturers synthesize Boron Nitride through high-temperature reactions involving boric acid or boron trioxide and nitrogen sources like ammonia. While the material is entirely synthetic, its purity levels in cosmetic grades are exceptionally high, often exceeding 99%. Outside the beauty industry, its thermal stability and electrical insulation properties make it indispensable in high-heat industrial environments and semiconductor manufacturing.
Integravimas į rutiną
Sinergija:
- Powder Bases: Works exceptionally well with Mica and Zinc Stearate to improve compressibility and skin payoff.
- Silicones: Combines with Dimethicone and Cyclopentasiloxane for a high-performance primer feel.
- Mineral Sunscreens: Enhances the spreadability and aesthetic finish of formulas containing Zinc Oxide.
- Polymers: Functions synergistically with Nylon 12 for superior oil-absorption and „ball-bearing” slip.
Nesuderinamumas:
- No known chemical conflicts; universally compatible with common cosmetic actives.
Klinikinis sutarimas ir saugumas
The Cosmetic Ingredient Review (CIR) Expert Panel has evaluated Boron Nitride and concluded it is safe for use in cosmetic formulations at concentrations up to 25%. Clinical data indicate the ingredient is non-sensitizing, non-irritating, and non-phototoxic. Because the particles used in cosmetics are typically large enough to avoid transdermal penetration, systemic toxicity is not a concern. Regulatory bodies globally, including those in the EU (CosIng) and Japan, permit its use without specific restrictive mandates, classifying it as a low-risk functional filler.
Does Boron Nitride cause acne?
No. This mineral is non-comedogenic and chemically inert. It does not clog pores or provide a food source for acne-causing bacteria.
Is Boron Nitride a natural ingredient?
Although it is often found in „mineral” makeup, it is a synthetically produced material. There is no naturally occurring mineral source of Boron Nitride suitable for commercial cosmetic use.
How does it differ from Talc?
Compared to Talc, Boron Nitride offers much higher slip, better skin adhesion, and superior light-diffusing properties. It is often used as a premium alternative to traditional fillers.