Q: What is silicone oil?
A: Silicone oil in cosmetics generally refers to polydimethylsiloxane (PDMS, polydimethylsiloxane), which is a type of silicone.
Q: Why does shampoo add silicone oil?
A: Silicone oil has the characteristics of low cost, good adhesion, non-toxic, odorless and tasteless. It is often used as a film-forming agent and emollient in cosmetics. It can be said that silicone oil is cheap and easy to use, and it is an extremely cost-effective ingredient. Therefore, more than 95% of shampoos on the market add silicone oil.
Q: What effect does silicone oil have on hair?
A: Silicone oil mainly acts on the outermost layer of hair scales to protect them from damage. Here are the effects of silicone oil on hair:
① Make hair smooth.
Silicone oil has extremely low surface tension, and has good stretchability, waterproofness and lubricity. These properties allow silicone oil to evenly cover the hair surface and form a dense hydrophobic protective film, making the hair surface smooth and smooth, reducing hair loss. The friction between hair and hair makes it easier to comb.
②Protect hair.
When perming or blow-drying your hair, the temperature of your hair rises, taking away moisture and causing breakage and split ends. The protective film formed by silicone oil products on the hair surface can effectively reduce water loss and heat damage, and also help to smooth the hair cuticle.
③Brighten the gloss.
Smooth, well-arranged hair reflects the sun's rays better, making it shinier and less damaging to UV rays than untreated hair.
④Prevent static electricity
In addition, the antistatic ability of polydimethylsiloxane can make hair docile and prevent hair from "flying".
The harm of silicone oil is manifested in several aspects: First: wrapping the scalp, damaging hair follicles, causing itchiness and oily scalp; Second: silicone oil falling off, peeling off the scalp, causing dandruff; Third: wrapping hair, blocking nutrient absorption; Third Four: Oxidation changes and the hair becomes hard and not smooth.
Silicone oil PK silicone-free oil
Since silicone-free oil is not a panacea, and silicone oil is not bad, when these two products meet, which one is better?
① Price
Silicone shampoos are usually cheaper, larger bottles, and more economical. Silicone-free shampoos are usually more expensive and are consumer upgrade products.
②Suitable for hair type
Shampoo containing silicone oil can fill the gaps between hair cuticles, reduce friction between hair strands, and make hair smooth and shiny. It is suitable for people with thick and thick hair. For people with fine and soft hair, silicone oil ingredients will make the hair weigh down, so it is more suitable to choose silicone-free products.
③Is the scalp healthy or not?
In order to increase smoothness, silicone-free products add silicone replacement ingredients. These ingredients may cause acne and acne on the scalp, so they are more suitable for people with healthy scalps. People with sensitive scalps should use silicone-free products with caution.