You are right about the typo. Avena Lab's website is very informative, whenever I buy a new active I go there to pick up the important data. Its staff is surprisingly compentent in comparaison to other cosmetic ingredient sellers. Many similar websites in Germany and France advertise it as "Betain" of "Coco Betain", but when you look for INCI name, it reads "cocamidopropyl betain". Sometimes Germans write "natural" before "betain" to differ it from plain "betain" surfactant.Then the distributors are probably not aware that those are two different chemicals. Also, "cocoamidopropyl" on that page is a typo. It's actually spelled "cocamidopropyl" without that extra "o".
INCI: Cocamidopropyl Betaine Betain is an amphoteric surfactant, compatible with hard water, with high concentrated electrolytes and at the all range of pH
Thank God INCI name is mandatory in description, it tells us all we have to know about the ingredient.
Yes, it does matter. For scalp is ideally 4.5, for hair 5-6. Shikakai is another ayurvedic plant I always add in syndet bar at 10%, but this time I will have to lower it down in order to squeeze two new surfactants in. Having in mind coco glucoside and Resplanta's PGA avocado oil (hydrosoluble oil) with its pH between 6.8-8.5, I will introduce for the first time baobab fruit pulp powder, rich in Vitamin C. Hopefully pH might fall within desirable range in the first trial with so many acidic ingredients. Tweaking solid shampoo's pH is a real pain in the butt, since you can't reheat it and simply add citric acid. The sample is just wasted.I am glad to hear that. Too many people lately think the pH of shampoo doesn't matter, and it absolutely does. Sounds like you already know what you're doing.
Henna must origin from reputable source. On the market many brands sell it as "henna" but it can be loaded with toxic chemicals. Henna can only dye hair in red and when you get the whole palette of colours (black, chestnut brown etc), it can't be pure henna. Black and brown nuances take two step method in applying to hair (especially on grey hair) which is very tiresome.I had done a quick Google search before posting to see what type of dye henna is, but found that it's available as different kinds so I wasn't sure what you had. But the important thing is, if harsh shampoo will remove even permanent dye, it will definitely remove the more temporary kind.
I buy it on Aroma Zone. It's the best ratio quality/price I could find in Europe. Amazingly cheap, but excellent quality and 100% pure plant.
Traditionnellement utilisé au Maghreb pour son pouvoir colorant, ce henné de grande qualité a été sélectionné pour sa fine granulométrie et sa composition 100% pure et naturelle. Il s'utilise pour préparer des masques capillaires colorants pour apporter aux cheveux une couleur cuivrée à auburn...