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Questions about silicones in cosmetics

Dead Girl asks…Why is it hard to ask a question here? Where could I type my questions, please ?

The Beauty Brains respond:

Dead Girl’s talking about our Forum where we’re currently fighting a spam-bot invasion. Unfortunately, some real members were deleted along with the bots which is what caused the problems she was having. So, I asked her to send me her questions directly.

I think she’s broken the record for the longest series of questions we’ve ever received at one time! (She listed approximately 17 different questions.)  I won’t be able to cover them all here but I’ll do my best to discuss what I think are the most important ones.

Q: Is “Poly Dimethyl Siloxane” a water-soluble silicone ?
A: No this is just another name for dimethicone which is a very water insoluble substance.

Q: What about “bis aminopropyl dimethicone” wouldn’t it be useless in a Rinse-Out Conditioner if it’s water soluble anyway?
A: It’s not useless because the “amino function” gives the molecule a positive charge. Therefore it can stick to the negatively damage sites on here even after rinsing.

Q: Don’t Silicones clog pores, skin or scalp pores ?
A: No, silicones are none comedogenic meaning that they don’t clog pores.

Q: Are compounds that end with “none” a Silicone?
A: Not necessarily. Many silicones do and in “none”. But some, like cyclopentasiloxane, do not.

Q: In a body shower or shampoo would Silicones block moisturizers out- even after it’s all washed out ?
A: No, silicone is a moisturizer. These things work by occluding the top layer of skin to lock in moisture.

Q: I had a big hair loss and my Doctor prescribed Lindo Spray, a hair serum that has  “Poly dimethyl Siloxan” on top  of its ingredient list.  But right after I started using it, I wanted to know what the heck is that Silicone and how it will restore my hair back.
A: Neither silicone or the other oils in this product will grow hair. At best the silicone will lubricate your hair and reduce breakage.

Comments on this entry are closed.

  • Aimee April 23, 2014, 12:46 pm

    I find that silicones do cause me to break out. Even if they technically don’t clog pores, they seem to really stick to my skin and either trap dirt/bacteria or plain don’t wash off. I’ve definitely noticed a difference in my skin’s clarity after changing to silicone-free products (or products that list silicones at the tail end of the ingredient list).

  • Pam April 24, 2014, 1:00 am

    Dead Girl, if you keep on using Lindo Spray, please post about how well you think it is working for you. Also, is it prescription-only or over the counter? I’ve never heard of it, but it sounds interesting.

    From the ingredient list, is it very much different from other hair care products?

  • Eileen June 5, 2014, 3:17 pm

    I can’t figure out how to submit a question either. I’m new to the forum. I hope someone will see my query here.

    How can opti-blur technology (as used in L’Oreal Revitalift Moisture Blur) work when you layer foundation over it? Good Housekeeping (June 2014) says, “When they’re layered under makeup, their light reflectors and silicones also minimize pores.” The photos in this article appear to show that the reflective glow actually does shine through: http://www.beautyjunkiesunite.com/WP/2013/03/11/loreal-paris-revitalift-miracle-blur-instant-skin-smoother-finishing-cream-review-photos/.

    • admin June 6, 2014, 6:17 pm

      I don’t know why people are having problems posting questions in the forum, it seems to work fine when I check in out. I’ll also put together a quick tutorial video in case anyone is confused over the instructions.

      Regarding your question, I assume this stuff works to minimize pores under a foundation the same way a coat of primer covers the surface better under a layer of paint.

  • gabis July 7, 2014, 8:47 am

    If silicones are “moisturizers” why all the fuss about them being so bad for hair and skin? I’ve read silicones prevent real treatment ingredients to penetrate on skin and hair and that their only job is to mask the results of poor formulated products. Is that true?
    Also, I’ve read some silicones are water-resistant and build-up on hair and skin so how to make sure to remove all silicone traces from the body, especially from the face after for instance applying a silicone-based makeup?
    I’ve be happy if you guys could suggest me a few silicone-free face products.

    • Randy Schueller July 7, 2014, 7:25 pm

      Gabis: It’s NOT true that silicones prevent other ingredients from working. It’s true that (some of them) can be hard to remove from hair (I’ve never seen any data suggesting that they are difficult to remove from skin.)

      • Ellie April 4, 2016, 7:06 pm

        How then can we remove product buildup from our hair? Sometimes I’m afraid that my hair isn’t curling the way it’s supposed to because of product buildup, so how can I get rid of all the buildup and thoroughly clean my hair?

        • Randy Schueller April 5, 2016, 10:57 am

          A good clarifying shampoo should do the job. For what it’s worth, I haven’t seen any proof that small amounts of product buildup can impact curling.

  • Ariel April 14, 2015, 8:18 pm

    If silicones don’t clog pores why do so many people break out because of them (myself included)?

    • Randy Schueller April 15, 2015, 8:27 am

      Hi Ariel. How do you know that it’s the silicones in the product that causes you to break out?