Home Cosmetic Science Talk Formulating Why is my sulphate-free shampoo not thickening?

  • Why is my sulphate-free shampoo not thickening?

    Posted by arastellar09 on September 12, 2025 at 7:43 am

    PHASE A

    Distilled Water - q.s. to 100%

    Sodium Phytate - 0.2%

    Propanediol - 3.6% + Hydroxyethyl Cellulose - 1.2% - SLURRY

    Sodium Methyl Cocoyl Taurate - 9% active surfactant matter

    Lauryl Glucoside - 6% ” “

    Sodium Lauroyl Sarcosinate - 5% ” “

    (Total active surfactant : 20%)

    PHASE B (Cool Down)

    Sapindus Mukorossi (Reetha) Fruit Extract - 1% (water based)

    Acacia Concinna (Shikakai) Fruit Extract - 1% (water based)

    Trigonella Foenum-Graecum (Fenugreek) Seed Extract - 1% (water based)

    Phyllanthus Emblica Fruit Extract - 1% (ethanol based)

    Ananas Sativas (Pineapple) Extract - 1% (ethanol based)

    Curcumin Water-Soluble 25% Colour Strength Powder - 0.3%

    Lemongrass Leaf Oil - 0.09%

    Peppermint Leaf Oil -0.06%

    Geogard ECT - 1%

    Lactic Acid - q.s. to pH 5.5

    - Heat Phase A to 75 degrees celsius, till everything is dissolved and HEC is well hydrated.

    - Add Phase B below 35 degrees celsius.

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    ^^ After this failure, I’ve made some changes and this is what I’ll be making next-

    Phase A — Water/Surfactant Phase

    Aqua (Water) = 58.35%

    Sodium Phytate = 0.20%

    Sodium Lauroyl Sarcosinate = 3.0% active surfactant matter

    Sodium Methyl Cocoyl Taurate = 3.0% ” “

    Lauryl Glucoside = 9.88% ” “

    (Total active surfactant : ~15.9%) -> lowered total active surfactants and anionic surfactant’s proportion


    Phase B — Cool-Down / Actives

    TEGO®️ Remo 95 MB (Sorbitan Caprylate, Glyceryl Oleate) = 1.00% -> new thickener I came across (will it work? or should I HEC too?)

    Sapindus Mukorossi (Reetha) Fruit Extract (water-based) = 1.00%

    Acacia Concinna (Shikakai) Fruit Extract (water-based) = 1.00%

    Trigonella Foenum-Graecum (Fenugreek) Seed Extract (water-based) = 1.00%

    Phyllanthus Emblica (Amla) Fruit Extract (ethanol-based) = 1.00%

    Ananas Sativus (Pineapple) Extract (ethanol-based) = 1.00%

    Curcumin (WS 25% powder) = 0.30%

    Cymbopogon Citratus (Lemongrass) Oil = 0.09%

    Mentha Piperita (Peppermint) Oil = 0.06%

    Optiphen (Phenoxyethanol, Caprylyl Glycol) = 1.00% -> changed preservative

    Lactic Acid = q.s. to pH 5.3–5.5

    Manufacturing Process

    • To the main vessel, add water (room temp).
    • Add Sodium Phytate; mix to dissolve (low–medium shear).
    • Heat to 60–65 °C (This helps dissolve taurate paste and reduces APG viscosity.)
    • Add Sodium Lauroyl Sarcosinate, mix until uniform.
    • Add Sodium Methyl Cocoyl Taurate, mix until completely dissolved (scrape walls; avoid aeration).
    • Add Lauryl Glucoside; mix gently until homogeneous.
    • Hold 5–10 min at 60–65 °C to ensure a clear, uniform base.
    • Start cooling with slow sweep.
    • Weigh the vessel and top up evaporative loss with DI water to the original target mass.
    • Cool to ≤40 °C before adding heat-sensitive materials.
    • Add water-based botanical extracts (Reetha, Shikakai, Fenugreek) one by one, mix well.
    • Add ethanol-based extracts (Amla, Pineapple), mix gently.
    • Disperse Curcumin WS 25%; mix until uniform color.
    • Add TEGO®️ Remo 95 MB (1.00%) at 30–40 °C, slowly in a thin stream with low–medium sweep. Mix 10–15 min; then allow 20–30 min rest for micelles to reorganize (viscosity will develop during this window).
    • Add Lemongrass and Peppermint oils; mix until homogeneous.
    • Add Optiphen (1.00%) at ≤40 °C; mix 5–10 min.
    • Measure pH. Adjust slowly with diluted lactic acid to pH 5.3–5.5.
    • Stand 30–60 min at 25 °C and recheck viscosity & pH. Ensure final pH isn’t drifting below 5.5. Fill when stable.

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    Please suggest any more changes I need to make to achieve shampoo like viscosity and have a stable product?

    • This discussion was modified 16 minutes ago by  arastellar09.
    • This discussion was modified 15 minutes ago by  arastellar09.
    • This discussion was modified 14 minutes ago by  arastellar09.
    arastellar09 replied 3 minutes ago 1 Member · 1 Reply
  • 1 Reply
  • arastellar09

    DIY formulator
    September 12, 2025 at 7:57 am

    Tego Remo 95 MB by Evonik is a lipid associative thickener. Ingredient supplier posted a video of making shampoo with this ingredient on YouTube. In the video, they used Sodium Cocoamphoacetate + Sodium Lauroyl Sarcosinate + Coco Betaine surfactant system. Only 1% of this thickener was able to achieve a good viscosity. Should I give it a try too? with my Taurate+Sarcosinate+APG surfactant system…?

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