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Last month, I shared my thoughts on K18 Astrolift Reparative Volume Spray in hopes of helping people with long, thick, bleached hair find something that actually works for their hair care routine. It adds up quickly when you’re trying to figure out what works for your specific hair.
I’ve been on the hunt for a new heat protectant. Not because anything is wrong with the one I’ve been using, but because I’ve been using it for a long time and felt like trying something new.
Let’s start at the beginning.
My Hair Situation (Context Matters)
I didn’t wake up one day as the Blonde Asian. I eased into it.
I started with highlights. That turned into balayage, which eventually turned into scalp bleaching. Somewhere along the way, it became a more lived-in blonde. But at the end of the day, it’s still chemicals on my head, and damage happened.
I went from a natural level 2 to about an 8 or 9.
My hair is straight and coarse, but dryness shows up mostly at the ends, not the scalp. Because of that, my hair tangles easily, especially when it’s compromised.
That’s the baseline I’m working from whenever I try anything that claims to repair or protect.
What K18 HeatBounce Claims to Do
First and foremost, HeatBounce is a heat protectant.
I was nearing the end of my Kenra Platinum Blow Dry Spray and asked my hairdresser for a recommendation. He immediately suggested HeatBounce. I was already somewhat familiar with it since he uses it on my hair at the salon, so I decided to try it.
It claims to protect hair from heat up to 450°F.
HeatBounce uses ResiliCore, not the K18 peptide. It’s meant for heat protection, flexibility under heat, and preventing damage before it happens. The positioning is that it goes deeper than surface-level heat protectants, reaching into the cortex rather than just coating the outside.
It’s also a leave-in conditioner, so it’s supposed to soften and detangle in addition to protecting. It’s marketed for all hair types.
How I Actually Use K18 HeatBounce
I primarily use HeatBounce as a blow-dry heat protectant. I always recommend starting with K18’s directions and adjusting from there.
I start with damp hair.
Step 1: I shake the bottle like a salt shaker. And yes, I do sing that Ying Yang Twins song.
Step 2: I uncap it and spray from my roots to mid-shaft, staying away from my scalp.
Step 3: Sometimes I spray a little into my hands and smooth it over the top and through the ends.
Step 4: Blow dry and style as usual
Like most hair products, it’s simple.
What I Noticed Over Time
This product adds moisture. A lot of it.
To the point where my hair can feel heavier than I like, especially when I’m wearing it down. It leans more leave-in conditioner than heat protectant in how it feels.
The instructions say to start small and build, and I really don’t use that much. Still, my hair ends up feeling coated, which K18 says shouldn’t happen.
I do think part of this could be the spray itself. If it came out finer, it might distribute more evenly. Right now, it’s easy to over-apply without meaning to.
Who I Think This Works Best For
This feels best suited for dry, chemically treated hair of any type.
If your hair tangles easily or needs extra softness, I can see this working well. My hair gets drier in the winter, and that’s when this makes the most sense for me.
Is It Worth the Price?
The full size (4 oz) is $48, and the mini (1.6 oz) is $24.
I went straight for the full size because my hairdresser used it after a bleach session and I trusted that. In hindsight, I wish I had started with the mini.
Where It Fits in My Blonde Routine
I’ve realized this isn’t something I need every wash.
I reach for it when my hair is feeling drier, especially in colder months. But it’s not my everyday heat protectant.
Once I finish the bottle, I don’t plan on repurchasing unless my hair changes.
The Grounded Verdict
I’ve had good results when my hairdresser uses HeatBounce, especially right after blonding.
At home, I haven’t been able to find the right balance.
I went into this looking for a heat protectant. What I got was something that behaves more like a leave-in conditioner. That’s not necessarily a bad thing, but it’s not what I was trying to replace.
For now, I’ll be going back to Kenra Platinum Blow Dry Spray while I keep looking for something that fits my routine better. Even though this wasn’t a complete hit, the next K18 product I’m sharing is.
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