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Dual layer cosmetic product
I am thinking to develop a dual layer cosmetic product (cream, lotion or face cleanser or other suitable category). If anybody is having an experience or any suggestion related to it, please share & i would like to mention here that i have done literature survey for this but unfortunately i didn’t find much useful info even though there is not much market presence of such products. I also have a question that :
1. Which kind of chemistry does behind such a dual layer technology?
2. Is it a difference between specific gravity of each layer or related to miscibility?
3. Is it a role of filling technique of such a product behind it?Note - Dual layer cosmetic means, product should discharge from nozzle of the tube in two colors or one layer should be transparent & other creamy like.
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12 Replies
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you seem to be describing two very different things here
do you mean a product that exists as two separate liquids inside the bottle, and that you shake before use, e.g. Dentyl pH mouthwash?
or do you mean something like striped toothpaste?
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If it’s like Stripe toothpaste, discharging from the neck of a tube, then it’s done by filling 2 tubes that are then laid side by side to dispense thru a neck with a septum.
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I mean, two separate liquids or semi solids inside tube or bottle.
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Semi solids should not mix even by shaking.
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Are you referring to something like this product?
http://www.directcosmetics.com/icode/59218
I’m not sure how it is done but it is very clever.
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Somewhat same as mentioned by @ozgirl, i mean to say dual layer product discharge from one tube. Please refer - http://www.garnier.in/face-care/beauty/garnier/powerwhite/dual-action-face-wash
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ashish - It is still not clear what you are talking about.(at least not for me) There is a huge difference between a double-action shower gel(which is more of a marketing trick since almost every cosmetic ingredient have more than one function) and actually having physically two different products side by side in one bottle.
@ozgirl - the link is not working - says out of stock -
I am guessing OP is referring to something like this:
Should this be the case, the answer to your question is a combination of filling technology and miscibility. The clear gel is aqueous and the colored swirls are hydrophobic (i.e. oil based gels, W/O emulsions, etc.). Each component is made separately and specialized filling equipment creates the swirl effect. -
Sorry about the link not working. The product I was referring to was the Garnier Ultra Lift 2 in 1 Serum + Moisturizer.
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Please check following link :
http://www.indianbeautyhub.com/new-launch-garnier-white-complete-double-action-face-wash/ -
Two immiscible layer in single tube or suitable container. for e.g. one yellow & other white or one transparent & other creamy.
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Many years ago there was a product (bath oil, I think) which had three separate layers. The product was quite useless but it looked good in the bathroom as the three layers were three different colours.
I had a request for a five layer product to compete but the best we could manage was four - and we weren’t able to get a good enough colour difference between the layers.
The layers comprised water bottom layer, light mineral oil for the middle and the top layer was a volatile silicone (cyclopentasiloxane). The colour was water soluble for the lower layer and oil (or rather silicone) soluble. By careful selection of colours there was a three colour system with the middle layer a combination of the upper and lower layers.
Looked spectacular, especially after shaking and allowing to separate again but, as said above, totally useless.
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