Behentrimonium chloride & it says to use up to 5% but your recipe says 20% is it safe at 10%

I saw your recipe for a conditioner bar that uses Behentrimonium chloride. The package I bought says use up to 5% of it but the recipe calls for 10%. Is it safe to use at 10%? I bought at www.makingcosmetics.com and the UK only allows up to 5% ??

1 Answer

Which recipe?