Summer is great for a lot of things. Your hair color is not always one of them.
If you’ve ever noticed your color looking a little duller, brassier, or just… off by the end of summer, you’re not imagining it. Sun, heat, and humidity all affect color-treated hair in specific ways — and knowing what’s actually happening makes it a lot easier to prevent.
What Summer Does to Your Color
UV rays fade color from the outside in. The sun breaks down the pigment molecules in your hair the same way it fades fabric left in a window. For blondes and highlighted hair, that usually means going brassier or more yellow. For brunettes, color can go flat or slightly warm. For reds, it can be noticeable fast. Red pigment is especially vulnerable to UV exposure.
Humidity is sneaky. It doesn’t just affect your texture — it can make color look duller and uneven over time, even if you’re doing everything else right.
Chlorine and salt water are their own problem. Pool water and ocean water both strip moisture and can pull color. Chlorine is particularly rough on blonde and lightened hair — it oxidizes what’s already been lightened and can push things brassy quickly.
How to Protect It
Start before summer does. If you know you’re going to be spending a lot of time outdoors or near water, it’s worth refreshing your color or getting a gloss before the season starts, not just after you notice the damage. You’re giving your color a head start.
Use a UV-protective product daily. This is the most straightforward thing you can do at home. A leave-in spray with UV filters creates a barrier that slows down oxidation from sun exposure. It doesn’t have to be complicated—it just has to happen consistently.
Wash less, rinse more. Every shampoo removes some color. In summer, rinsing after a swim and letting hair air dry helps preserve what you have. When you do wash, use a color-safe, sulfate-free formula.
Keep heat styling in check. If your hair is already dealing with sun and humidity, adding more heat compounds the wear. On days when you can skip the blow dryer or flat iron, it’s worth it.
Protect before you swim. Running a little leave-in or conditioning product through your hair before you get in the water creates a buffer. It won’t block everything, but it slows down how much chlorine or salt your hair absorbs.
What We’re Recommending
Here are a couple of products you can add to your summer color homecare routine, and you can pick them both up from Hairetics Salon:
Redken Acidic Color Gloss is a glossing treatment you can use at home, about once a week. It works at a low, acidic pH to seal the hair cuticle, lock in shine, and help protect color from the dulling effects of water and heat—exactly what summer keeps throwing at your hair. It’s a good way to keep your color looking fresh between appointments without coming in, and it works with any color service: permanent color, glosses, toners, balayage.
Pureology Color Fanatic Multi-Tasking Leave-In Spray is the everyday hero. It protects from heat up to 450°F, provides UV protection, detangles, and conditions, all in one lightweight spray you use before styling. For summer, the UV protection is the part that matters most. It’s one of those products that’s easy to skip when you’re in a rush, but makes a real difference over the course of a season.
Together they cover the two moments that count: maintaining your color through your weekly routine, and protecting it every day from the elements.
The Bigger Picture
Summer doesn’t have to mean sacrificing your color. Most of what damages it is either preventable or manageable with a few consistent habits—and having the right products in your routine makes a real difference in how your color holds up through the season.
If you want to talk through what makes sense for your hair going into summer, bring it up at your next visit. We’ll take a look at where you’re starting from and help you build a routine that works.
CLICK HERE to reserve your next experience with us — we’re located in SOMA, San Francisco.