Welcome and Happy Dreading.
Welcome. Crocheting is worse than any products. Even wax. Like Eagle said. With a detergent and a lot of scrubbing, you can get wax out. Crocheting rips your hairs into smaller and smaller pieces. This can't be fixed. With each pass of the hook, back and forth, more hairs are broken. Your locks can heal from this if you don't do it more than a few times, but it takes a long time to heal.
There is no need to try and tighten your locks. Mature locks should be soft and spongy. Not hard and stiff.
welcome but crochets worse then products! crochet causes extreme damage and delays progress by a ton
6 months if only used once over a =year if used more
crochet just does severe damage causing the need to crochet more and lore till thewy are so weak and damaged they fall off
throw the hook away and let them recover