Solid shampoo bars with a crisp lemon fragrance

Solid shampoo bars with a crisp lemon fragrance

(Great for holidays and going to the gym where liquids can be irritating.)
Makes 400g

In a double boiler, heat the following:
240g SCI surfactant
60g decyl glucoside
40g cocamidopropyl betaine
20g conditioner pellets
12g cetearyl alcohol
8g mango butter (any oil or butter will be fine)

When the above pellets are melted (it looks slushy, not liquid):
Add

4g hydrolysed wheat protein
4g D-panthenol
4g cococaprylate
4g litsea cubeba essential oil

Mix it all up using a spatula and press into moulds.
Unmould when it's cold and hard, in about 24 hours.