Help! Lotion is sticky! - Cosmetic Science Talk

Help! Lotion is sticky!

edited October 12 in Formulating
Here's a rundown:

A. Water-qs
Veegum-0.3
Carbomer-0.3

B. Glycerin-3
Propylene Glycol-2
Sodium Lactate-2
EDTA-0.05

C. Cetyl Alcohol-2
Ceteareth 20-1
Glyceryl Stearate & PEG-100 Stearate-3
Isononyl Isononanoate-2
Capric/Caprylic Triglyceride-1.5
Dimethicone-1

D. TEA-0.3
Glycolic Acid-1
Arbutin-0.2
Niacinamide-0.5
Glutathione-1
Suncat DE (for sun protection)-1.5

E. Euxyl PE-0.3
Vit. E-0.5
Frag.-0.5

My lotion is so sticky. What could be the problem? Is it the moisturizers? Is it the sun protection? Im running out of options ... and ingredients also. Thanks!

Also, I tried adding Silica one time and the result is bad. The lotion did dried fast but it causes like your skin is peeling off-there are skin flakes. What should I add to have a matte feeling? Will polysilsesquioxane will do the same result as silica?

Comments

  • Reduce the humectants, add a little c12-15 Alkyl Benzoate or a volatile solvent like cyclomethicone. Remember it’s all about trials and experimentation to get desired product properties.
  • @Chemist77 how about Diethylhexyl Carbonate?
  • Arlamol LST (croda) can be post added for level usually 1%
  • @Chemist77 I have here c12-15. At what % ? Is 2% enough or too high?
  • @Chemist77 @DRBOB@VERDIENT.BIZ should i add xanthan gum? I have one benchmark lotion here that used veegum, carbomer and xanthan gum all together. 
  • yes you  can use xanthan gum which works well with carbomer:Should not be sticky as we often use the combination.I am not a fan of veegum unless forced to use it.
  • Agree with Dr. Bob, use Veegum only if the formulation gets unstable. Or better make one sample with Veegum as well and compare 2 versus all 3 comprehensively.
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