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That's the gel cast doing its job. Once hair is 100% dry, scrunch gently to break it — the crunch disappears and the definition stays.

Generally yes. Looser waves and curls need lighter formulas and less product; coilier, drier textures need richer creams and butters underneath a gel, not instead of it.

You can, but most regular shampoos strip more than curly hair can spare — curls tend to be drier by nature. A sulphate-free, curl-specific shampoo like Plumpy Curls' range keeps more moisture in.

Both, depending on the barrel and technique — it's genuinely capable of tighter curls, not just loose waves, but it takes practice to get consistent results.

Less often than straight hair, typically — curls are more prone to dryness, and over-washing strips the moisture a lot of these products are trying to put back. Every two to four days is common, adjusted to your scalp.