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ScientistSeptember 20, 2023 at 5:03 pm in reply to: Sodium Laureth Sulfate SubstituesYou can try a combination of AOS and CAPB that would give you foaming property somewhat close to SLS. If you want to go for sulfate-free try with decyl glucoside and CAPB but that would cost you more also you won’t be able to achieve the good foaming property.
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ScientistMarch 21, 2023 at 4:11 am in reply to: (URGENT) Shampoo smell really bad after remove Peg-40 and change to Lactic AcidTry using some essential oil (if possible) to mask the base odor and it would be more stable compared to synthetic fragrance.
Do a stability test with and without lactic acid to make sure off odor is because of this specific swaping.
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Unknown Member
ScientistMarch 21, 2023 at 4:03 am in reply to: DIY Brightening Face Serum FormulationI would suggest the below skin brightening serum with minimalist ingredients.
Water QS , Niacinamide (5%) – Proven skin brightness and improves skin moisturization kind of multifunctional active, Glycerin (5%) – proven skin hydration, Ethyl ascorbic acid (3%)- Proven skin brightening vitamin c source, Xanthan Gum (0.5%) – Thickener (dissolve xanthan gum in glycerin while processing to avoid lumps), Phenoxyethanol (0.9%) , – Preservative, Ethylhexyglycerin (0.1%) , Salicylic acid (0.1%) – for mild exfoliation, Tocopherol acetate (0.1%) – Antioxidant, Disodium EDTA (0.1%), Allantoin (0.1%), Citric acid (to adjust pH to 4.5 – 5.0).
Reason for avoiding 1% salicylic acid – skin irritant and you need to have solubilizer like propylene glycol at 1: 3 ratio or alcohol to dissolve salicylic acid.
Licorice, Centella asiatica – to make sure it is 100% pure (marker run is always recommended for this kind of natural extracts)
Tranexamic Acid – good option but costlier.
Certain arbutin are banned in some countries
Sodium hyaluronate – 0.1% is very less conc. May be 1% can be tried in that case xanthan gum can be avoided because sodium hyaluronate itself thickens the formula.