The first summer I moved to a flat with a rooftop pool, I thought I’d hit the jackpot — and by August my hair felt like dry hay and had faded two shades lighter than I wanted. I genuinely couldn’t work out what I was doing wrong, because I was washing and conditioning it constantly. It turned out that constant washing was half the problem. Once I learned which everyday habits were quietly wrecking my hair, I fixed them one by one, and the following summer my hair came through July soft and shiny for the first time in years.
So I want to walk you through the seven mistakes I was making, because I’d bet you’re making at least one of them too. For each one I’ll tell you what’s actually going on with your strands and the exact swap that fixed it for me. None of this needs expensive products — it’s mostly about being a little gentler and protecting the moisture your hair already has.
Why Summer Hits Your Hair So Hard
Before the mistakes, it helped me to understand what summer is actually doing up there. UV rays break down keratin, the protein that gives hair its strength, and they fade color the same way they fade a curtain left in a sunny window. Chlorine and salt water pull moisture straight out of the strand, while humidity swells the hair shaft and lifts the cuticle, which is exactly what frizz is. Pile sweat and extra washing on top and you get that classic August combination of dry, brittle, fluffy hair — almost all of which is preventable.
Mistake #1: Skipping UV Protection for Your Hair
I’d never leave the house without sunscreen on my face, yet it never once occurred to me that my hair needed the same thing. That rooftop-pool summer, the fading was so obvious that my hairdresser asked if I’d lightened it on purpose. The honest answer was that the sun had done it for me, for free, along with drying every strand to a crisp.
The fix I use: On strong-sun days I work a leave-in with UV filters through my lengths before I go out, and when I know I’ll be out for hours I just wear a wide-brimmed hat. The hat is honestly the easiest hair-saver there is — no product, no reapplying, and it shades your scalp and face too. If you only adopt one habit from this whole list, make it this one.
Mistake #2: Jumping Into the Pool With Dry Hair
This is the trick I wish someone had told me a decade ago, because it’s so simple. Dry hair behaves like a dry sponge — it greedily soaks up whatever it touches first, and at a pool that means chlorine. I tested it for myself one week: the day I rinsed my hair before swimming, it felt noticeably softer afterward than the days I dove straight in.
The fix I use: Before I get in, I soak my hair with clean water from the poolside shower and smooth a little conditioner or oil through it. Once the hair is already full of fresh water, there’s simply no room left to absorb much chlorinated or salty water — it’s like wetting a sponge before you wipe up something you don’t want it to keep. I rinse again the second I’m out, too.
Mistake #3: Over-Washing Your Hair
This was my biggest culprit. Sweaty, sticky summer days made me feel like I needed to shampoo every single morning, so I did — and I was stripping out the natural oils that keep hair soft and protected faster than my scalp could replace them. The cruel irony is that the more I washed, the more my scalp overproduced oil to compensate, so I felt even greasier and washed even more.
The fix I use: I dropped down to washing two or three times a week, and it took about a fortnight for my scalp to recalibrate before it settled. On the in-between days I rinse with water, use a gentle co-wash, or dab a little dry shampoo at the roots. After a workout or a swim I focus on rinsing rather than a full shampoo, and my hair is far happier for it.
Mistake #4: Washing With Hot Water
I love a hot shower, and I never connected that to my dull, frizzy ends until a stylist pointed it out. Hot water lifts the hair cuticle and lets moisture escape, so you step out with hair that’s clean but parched. In summer, when your strands are already battling sun and chlorine, it’s piling one drying thing on top of another.
The fix I use: I wash with lukewarm water now and finish with a quick cool-water rinse over my lengths. That final cool blast helps seal the cuticle flat, which locks in moisture and gives a real boost of shine. On a hot day it also feels wonderful, so it’s been the easiest change of all to stick with.
Mistake #5: Brushing Wet Hair Roughly
I used to rake a fine-tooth comb straight down through soaking-wet hair the moment I got out of the shower, then wonder why I was finding broken bits everywhere. Hair is at its most fragile when it’s wet, and that rough treatment was snapping it and creating split ends and frizz. Watching how much hair I lost in the brush was the wake-up call.
The fix I use: I always detangle gently now, starting at the very ends and working up in small sections so I’m easing knots out instead of dragging them down. A wide-tooth comb or a proper wet-hair brush makes a huge difference, and I spritz on a leave-in or detangler first to add slip. It takes an extra minute and saves a startling amount of breakage.
Mistake #6: Overusing Heat Styling
For a long time I blow-dried and straightened my hair daily out of pure habit, even on 30-degree days. Stacking that heat on top of summer’s UV and chlorine made the damage compound shockingly fast — my ends were the texture of straw by midseason. The thing that finally made me stop was realizing my natural texture actually looked better when I left it alone.
The fix I use: I treat summer as a season off for my hot tools. I air-dry whenever I can, lean into heatless styles like braids and buns, and on the rare occasions I do reach for a hot tool I always use a heat protectant and turn the temperature down. Your strands almost never need the highest setting, and dropping it makes a real difference over a summer.
Mistake #7: Neglecting Deep Conditioning
For years my routine was all cleansing and no real nourishment, and my hair was starving for moisture without my realizing it. The week I finally added a proper weekly mask, the change was so noticeable that I felt a little silly for not doing it sooner. It’s now the non-negotiable step that holds the whole summer routine together.
The fix I use: Once a week I work a deep-conditioning mask through my lengths and leave it on while I potter around. I look for argan oil, shea butter, coconut oil, or hyaluronic acid on the label. My favorite trick is to apply it before a relaxed beach day and leave it in under a hat — the gentle warmth helps it sink in, and my hair drinks it up.
My Simple Summer Hair Routine, Start to Finish
If you want the short version of everything I changed, here’s the rhythm I follow now without even thinking about it:
- Protect before sun: a UV leave-in or a wide-brimmed hat on bright days.
- Prep before swimming: rinse with clean water and add oil, then rinse again after.
- Wash less: two or three times a week, lukewarm, with a cool final rinse.
- Detangle kindly: wide-tooth comb, ends first, with a detangler for slip.
- Cool the heat: embrace your texture and always use a heat protectant.
- Mask weekly: the one step I never skip anymore.
Give Your Hair an Easier Summer
The straw-like hair I used to dread wasn’t inevitable — it was just the sum of a few small habits I didn’t know were hurting me. Fix even two or three of these and you’ll feel the difference within a couple of weeks, the way I did when I finally got there.
If I were you, I’d start this week with the pre-swim rinse and a weekly mask, since those two gave me the biggest payoff for the least effort. Build the rest in as they become second nature, and enjoy every beach day and pool afternoon without quietly dreading what it’s doing to your hair.