Dimethicone/Vinyl Dimethicone Crosspolymer yra pažangus silikono elastomeras, naudojamas suteikti prabangų, pudrinį odos pojūtį ir kartu užtikrinti ryškų matinį efektą. Jis pirmiausia veikia kaip aukšto našumo tekstūrą gerinanti medžiaga, maskuojanti netobulumus ir sugerianti odos riebalų perteklių neužkemšant porų.
- INCI pavadinimas:
- Dimethicone/Vinyl Dimethicone Crosspolymer
- Cheminis / mokslinis pavadinimas:
- Dimethylpolysiloxane crosslinked with vinyl groups
- Dažni sinonimai:
- Silicone Elastomer Powder, Vinyl Dimethicone Crosspolymer
| Kategorija: | Tekstūrą gerinančios medžiagos |
| Kilmė: | Sintetinis |
| Komedogeniškumo reitingas: | 0 |
| Pagrindinės pramonės šakos: | Kosmetika, dermatologija, apsauga nuo saulės |
| Tirpumas: | Tirpsta aliejuje / silikonuose |
Savybės ir poveikis
| Tekstūros gerinimas: | |
| Sebumo kontrolė: | |
| Dirginimo rizika: |
- Pagrindiniai privalumai:
- Suteikia neriebų, „soft-focus“ užbaigimą, vizualiai sumažinantį smulkias raukšleles ir poras.
- Veikia kaip sausas aliejų pernešimo pagrindas, gerinantis sunkių formulių paskirstymą.
- Efektyviai sugeria riebalus, todėl ypač tinka riebiai ir mišriai odai.
- Galimos rizikos:
- Gali sukelti „gumuliavimąsi“, jei tepamas ant nesuderinamų vandens pagrindo serumų, neskyrus pakankamai laiko jiems išdžiūti.
- Norint išvengti paviršinių nešvarumų kaupimosi, dienos pabaigoje reikia kruopščiai nuvalyti odą.
Biologinis poveikis ir kosmetinis profilis
Chemically classified as a silicone elastomer, this specialized polymer consists of Dimethicone chains that are cross-linked via vinyl groups to form a flexible, three-dimensional network. Unlike traditional fluid silicones, these elastomers exist as spherical particles that can swell in the presence of compatible solvents like Cyclopentasiloxane or Isododecane. The resulting structure creates a viscoelastic gel that remains on the skin’s surface, providing a distinctive „cushion” effect that improves the tactile experience of skincare products.The three-dimensional architecture of the elastomer allows it to trap and absorb liquid sebum within its matrix. This physical entrapment prevents lipids from migrating to the surface, effectively reducing unwanted shine throughout the day. Because the particles are significantly larger than human pores, they are unable to penetrate the stratum corneum, remaining biologically inert and non-comedogenic.Formulations containing this crosspolymer benefit from light-diffusing properties known as the „soft-focus effect.” The spherical shape of the polymer particles scatters light in multiple directions, which optically blurs the appearance of skin irregularities and wrinkles. This action is purely physical and does not rely on chemical reactions with the skin cells, making it a staple in primers and high-definition foundations.Topical application results in a breathable, hydrophobic film. This barrier helps to reduce transepidermal water loss (TEWL) to a minor degree while enhancing the resistance of the formulation against sweat and humidity. In clinical sunscreen formulations, this ingredient is often utilized to stabilize UV filters and ensure a more uniform distribution of active agents across the uneven topography of the skin.
Platesnės taikymo sritys ir kilmė
Industrial production of this elastomer involves a hydrosilylation reaction, a process that ensures high purity and consistency. Beyond facial aesthetics, these elastomers are frequently found in hair care products to provide silkiness without the weight of heavy oils, and in antiperspirants to improve the glide of the stick during application. In medical settings, similar silicone crosspolymers are employed in scar management gels to maintain a hydrated environment conducive to healing.
Integravimas į rutiną
- Sinergija:
- Mattifying Agents: Pairs excellently with Silica or rice starch for enhanced oil control in humid climates.
- Lipophilic Actives: Serves as a stable carrier for oil-soluble vitamins like Tocopherol, helping to deliver them evenly.
- Volatile Silicones: Often combined with Cyclopentasiloxane to create silky gels that evaporate cleanly, leaving only the velvety powder behind.
- Nesuderinamumas:
- Heavy Water-Based Serums: May pill if layered immediately over high-viscosity Glycerin or hyaluronic acid serums that have not fully absorbed.
Klinikinis sutarimas ir saugumas
The Cosmetic Ingredient Review (CIR) Expert Panel has evaluated the safety of cross-linked alkyl siloxanes and concluded they are safe for use in cosmetic practices. Data indicates that these polymers lack the potential for skin irritation or sensitization due to their large molecular weight and lack of chemical reactivity. Furthermore, dermatological studies confirm that silicone elastomers are non-occlusive and do not promote acne, as they allow for the normal passage of oxygen and water vapor.
Is Dimethicone/Vinyl Dimethicone Crosspolymer safe for acne-prone skin?
Yes. This ingredient is non-comedogenic and does not penetrate the pores. Its ability to absorb surface oils can actually be beneficial for those with oily, acne-prone skin by maintaining a matte finish.
Does this ingredient cause „pilling”?
It can cause pilling if the formula is rubbed too vigorously or applied over wet, water-rich products. To prevent this, allow water-based serums to dry completely before applying a product containing silicone elastomers.
Is this a „plastic” or microplastic?
In a regulatory context, silicone elastomers are distinct from the microplastics often targeted by bans (like polyethylene beads). Most silicone elastomers in cosmetics are used in a gelled or liquid-dispersed form rather than as solid, non-degradable beads.