Somewhere between the shedding and the regrowth, a lot of new moms notice something stranger than hair loss: their hair just isn't the same hair anymore. Straight hair comes in with a wave. Curls loosen or tighten. Hair that used to sit smooth now frizzes no matter what you do to it.
If you've been searching for what's wrong with your hair and everything you find is either "just hormones" with no real explanation, or a product page trying to sell you a serum — here's an actual breakdown of what's going on, and how much of it you should expect to stick around.
This Is Real, and It's More Common Than You'd Think
Hair professionals who work with postpartum clients regularly describe this as one of the more confusing changes new moms bring up — often more unsettling than shedding, because shedding at least has a well-known explanation. Texture change doesn't get talked about nearly as much, and even some dermatologists have noted that this particular postpartum change is understudied compared to hair loss.
So if you feel like you can't find a straight answer — you're not missing something obvious. The research genuinely hasn't caught up to how common this is.
Why It Happens
The most consistent explanation across hair professionals comes down to two things:
1. Follicle shape changes. The shape of your hair follicle largely determines whether a strand grows straight, wavy, or curly — round follicles tend to produce straighter hair, while flatter or more oval-shaped follicles produce more curl. Pregnancy hormones are believed to subtly influence connective tissue and muscle tone around the follicle, which can shift its shape enough to change what grows out of it.
2. Hormonal activation of curl-pattern genes. Some hair professionals describe pregnancy hormones as capable of "waking up" curl-pattern genes that were previously dormant — which is why some women with pin-straight hair their whole life suddenly grow in with waves or curls after having a baby, seemingly out of nowhere.
Worth being upfront about: this is professional consensus built from clinical observation and hairstylist experience rather than a large body of peer-reviewed research. Nobody currently offers a fully proven mechanism, and that's part of why this topic gets so little solid information online.
Is It Temporary or Permanent?
Both are genuinely possible, and there isn't a single reliable predictor. What professionals do generally agree on:
- Most texture changes are temporary, gradually reverting toward your original texture as hormones fully stabilize
- Full stabilization can take 12 to 24 months postpartum — longer than the hair shedding timeline, which is part of why people get impatient and assume the new texture is permanent when it may still be settling
- Permanent changes are more likely if you're older at the time of pregnancy, have had multiple pregnancies, or already had some age-related hair changes beginning before pregnancy
If it's been under a year, there's a reasonable chance your texture is still in transition rather than fully settled. Past 2 years with no change back, it's more likely this is simply your hair now.
How to Tell Texture Change from Just Damage
This trips a lot of people up: postpartum hair is also more prone to dryness and fragility during the shedding phase, which can look like a texture change but is actually just damage and frizz from weakened strands.
A few ways to tell the difference:
- True texture change shows up consistently in new growth near the roots — you'll see the new pattern clearly in the first inch or two closest to your scalp
- Damage-related frizz tends to show up more in mid-lengths and ends, especially if your hair has felt drier or more tangled overall since giving birth, and it usually improves with a more hydrating routine within a few weeks
- If you're unsure, check your regrowth at the roots specifically — that's the most honest preview of what your "new" hair actually is
Adjusting Your Routine for New Texture
If your hair went straighter → curlier or wavier:
- Cut back on washing frequency — newly curly/wavy hair usually needs less frequent washing than straight hair to avoid stripping natural oils
- Switch to a hydrating, sulfate-free cleanser
- Try scrunching product in on damp hair rather than brushing it through dry, which can break up new curl definition
If your hair went curlier → straighter or looser:
- You may be able to reduce heavy curl-specific products that now weigh hair down
- Reintroduce brushing/detangling tools you may have avoided before, since finer or looser texture handles them differently
Either direction:
- Be patient with color and chemical treatments — new hair texture behaves differently with dye, relaxers, or perms than your old texture did, so what worked before may not work the same way now
- Give it at least a few full wash cycles before judging whether a new routine is working — hair adjusting to new products takes time regardless of texture
When to Mention It to a Doctor
Texture change on its own is rarely a medical concern. But mention it at a checkup if it's paired with:
- Noticeable fatigue, feeling unusually cold, or weight changes — these combined with hair changes can point to postpartum thyroiditis, which affects hair quality and is easily checked with a blood test
- Hair that feels unusually brittle or is breaking heavily, not just changing pattern — this can indicate a nutrient deficiency worth addressing directly rather than just adjusting your styling routine
The Bottom Line
Your hair isn't broken, and you're not imagining the change. It's a real, hormonally-driven shift that the hair industry still doesn't fully understand — which is exactly why it's harder to find good information on it than on shedding. Give it time, adjust your routine to what's actually growing in now rather than fighting to keep your old routine working, and revisit how it looks again around the one-year mark before assuming it's permanent.
Also read: Hair Falling Out Again After Stopping Breastfeeding? Here's Why (Weaning Shedding Explained)
Postpartum Hair Shedding: When Does It Actually Stop?
This article is for general information and isn't a substitute for medical advice. If you're concerned about hair or scalp changes, your doctor or a dermatologist can check for underlying causes specific to you.
Written by Maren Cole
Maren researches and fact-checks every article on The Scalp Report using published research and on-record commentary from board-certified dermatologists and trichologists. Not a substitute for medical advice — see our full disclaimer.