i can only tell how my hair reacts to glycerin in low dews, and it's bad!! (however, i need to add that it also must depend on the formulation of the product because there are one or two that i can us, cj honey butta is one of them).

for glycerin-free gels the two that i use are curl junkie pattern pusha gel (i scrunch it in after my hair is dry) and LALSG, but even tho i use leave in, there is something in lalsg that tends to dry out my hair. btw, cj pp is also protein free. another glycerin-free gel is curl junkie curl queen.
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3a, some 2c & 3b, medium texture, porosity normal, low elasticity
washing/cowashing, conditioning, protein tx: [I] curl junkie products
leave in:cj conditioners and treatments as leave in
styling: cj aloe fix gel, cj pattern pusha, cj honey butta leave in, cj cccc, cj ciab.
sealants - jane carter nourish & shine