No way you'll lose your curl. Mine isn't anywhere near as curly and mine was still very wavy after.
Do you highlight your hair?
If you have mostly virgin hair, you won't see much result aside from being frizz free.
no, i definitely don't highlight my hair, but only dye my roots every 2-3 weeks to cover the gray. my hair is dark though and for the most part, natural (except for the roots).
when you say virgin hair, what do you mean exactly? hair that's not damaged?
i definitely don't want to lose my curl, but i guess would want it to be more relaxed, like a wave, if that makes sense.