BTMS-50 is a conditioning self-emulsifier. if you can't readily find it in your country or it's too expensive, here are some alternatives you can try.
33rd PARALLEL, BTMS 50 Conditioning Emulsifier, Sizes 2 OZ to 1 LBS, 100% Natural Plant Derived, Behentrimonium Methosulfate Cetearyl Alcohol Emulsifying Conditioner
33rd PARALLEL, BTMS 50 Conditioning Emulsifier, Sizes 2 OZ to 1 LBS, 100% Natural Plant Derived, Behentrimonium Methosulfate Cetearyl Alcohol Emulsifying Conditioner
Hair Milk Experimentation and Whatnot - curlytea
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BTMS 50 Conditioning Emulsifier INCI Behentrimonium Methosulfate (and) Cetyl Alcohol (8, Oz) : Beauty & Personal Care
Lotioncrafter BTMS-50
BTMS-50 vs BTMS-25: Which one is best for your DIY recipes? - curlytea
33rd PARALLEL, BTMS 50 Conditioning Emulsifier, Sizes 2 OZ to 1 LBS, 100% Natural Plant Derived, Behentrimonium Methosulfate Cetearyl Alcohol Emulsifying Conditioner
Herbal Essences Rosemary And Herbs Foam Conditioner Review