If you want to be sure, do a skin patch test - try putting a teeny bit of GPB on a patch of skin, and leave it there for a day or so (under a band-aid/plaster). If you're allergic to it, you'll either know right away, or you'll notice a localised allergic reaction.
If not - you're safe to use it.
3b/c. Fine, med-high porosity, normal elasticity. Hair loves oils in summer, protein in winter. Constantly battling the hard water monster.
CJ Curl Theory, Curl Rehab, Smoothing, Curl Fix, Daily Fix, CCCC, CIAB, CQ, SSCC, MC shampoo, Inecto Pure Coconut Oil, CP luscious curl creme (summer), DB Pumpkin Seed (summer), FD/MT, JCWDT, JCTS
American literature PhD student in the UK...