Are you a long-time fan of K18 molecular repair oil and wondering just how to add Heatbounce conditioning heat protectant to your K18 routine? This one’s for you.

While molecular repair oil does offer heat protection up to 450°F degrees*, HeatBounce has completely changed the heat protection game, offering deeper heat protection than ever before*. Where molecular repair oil truly shines (pun intended) is the ability to reverse frizz-causing damage at hair’s innermost layers, while smoothing hair’s surface for 24 hours straight. 

If you want the best of both heat protection and frizz-fighting benefits with biology-first solutions—you’re gonna want to use both HeatBounce + molecular repair hair oil. 

Used solo, these formulas work hard to nourish hair and reverse damage, but together? Their instant benefits are better and the long-term impact on your hair’s health is even more dramatic. 

HeatBounce + oil in your routine

An effective hair routine should do two things:

1. prevent heat damage before it happens = HeatBounce

2. repair the damage that is already there = oil

It might sound simple, but preventing + reversing damage is the basis of every jaw-dropping hair transformation you’ve ever seen on TikTok. After all, damage is the culprit behind breakage, split ends, frizz, brassy color and tangles. The best way to meet your hair goals, whether that is long, lustrous length or bouncy, healthy curls, is by prioritizing products that go beyond surface-level to deliver deep molecular repair and protection.

HeatBounce conditioning heat protectant

Unlike other heat protectants, HeatBounce protects deeper than ever before*, all the way from the cuticle (the outermost part of the hair) to the cortex (the innermost layer of hair, where damage happens). Inspired by resilient proteins found in nature that can bounce back from extreme temps, HeatBounce uses biomimetic hairscience™ to stop heat damage before it can hurt your sensitive strands. 

The results?

• 85% less breakage after blow drying*

• hair gets stronger with continued use*

molecular repair oil

Molecular repair hair oil is there to prime your hair with repair straight out of the shower, as well as control frizz and add shine as a finisher. There are so many decadent hair oils out there, but only one K18PEPTIDE™—the biomimetic peptide that reverses damage at the molecular level.

The results?

- 24-HR frizz control*

- 104% improvement in shine*

- 78% reduction in split ends*

While both the molecular repair hair oil and HeatBounce have heat protection benefits, HeatBounce defends extra deep to help protect against color fade, dry feeling, dullness, and breakage. The oil delivers more traditional heat protection on the outer layers of hair and clinically proven damage repair.

how to use them together