I have a few clients who literally have half curly/half straight hair. Meaning, the hair that grows from their crown is straight, and the hair that grows underneath is curly (or the other way around)…two completely different textures. It creates a problem with cutting and daily styling. After getting an email from a girl with this type of hair, I thought it would be a good idea to post about it here! She and the girls I know can’t be the only bi-texturals!
This can be caused by damage, or nothing at all! I know some people who after doing the Keratin treatment a few times experienced entire straight sections, I know people whose hair was damaged from bleach and lost wave, but I also know people with perfectly healthy/virgin hair that just likes to do its own crazy wonky thing! Silly hair!
First thing, make sure you find the right hair cut. This is very important. The first time I saw a girl with straight underneath and curly on top, I thought she had been given the most uneven haircut ever. It turned out it wasn’t uneven, it was just cut wet. Once the hair dried into it’s natural state, the curly hair shrunk up, leaving a huge gap inbetween the length and the layers. She had been unintentionally *shelfed! I undercut the length on this particular girl to make sure she is never shelfed again. So, make sure you explain very well to your stylist how your hair behaves naturally. Have a real discussion about how the hair cut may fix it (or at least enhance it). For example, using a razor to cut internal layers on the straight portion can encourage wave!
For styling, unfortunately you can’t just go natural (unless you like the bi-textural look). My suggestion is to use a curling iron to blend the straight parts with the curly parts. You don’t have to do every section, just the most troubled! Curl a few pieces from the curly section as well to blend those with the straighties. So it doesn’t look like the photo of me below!

*Shelfed [shelft]
1. A situation where a hairstylist has intentionally or unintentionally created a severely chunky layer not coordinating with the client’s length, simulating a shelf.
2. A person(s) who became victim to a stylist whose refusal to blend heavy layers ends up in an incredibly shelfy and unmanageable hairstyle.
“Have you seen Lisa’s new haircut? She’s been shelfed!”