[Cosmetic_formulator]

As per IIG-FDA you can choose glycerin % till your product sensorials gets match your protocol. During my project I have done microemulsion gel based IIG-FDA and sensorial optimisation. It works great even i can claim my product as per guidelines.

I think it may helpful for you too  

[Cosmetic_formulator]

[Cosmetic_formulator]

[Cosmetic_formulator]

I read that as per IIG you can use glycerin upto 3%. Its good for skin