Epres’s Bond Repair Treatment Works Miracles on Damaged Hair—And It’s on Sale

My Experience With Epres’s Bond Repair Treatment

As someone with naturally long and thick hair, I’ve put little stock in my routine—until about a month ago. As my now-lob continues to grow out from last year’s dramatic chin-length chop, I’ve started noticing more flyaways (a telltale sign of mechanical damage) even though I’m as gentle with my hair as possible. I assumed being diligent about heat protectant was enough, but as it turns out, there are plenty of other ways to damage your hair; in fact, mechanical damage is one of the most common causes of hair damage. As Shab Caspara, a New York City–based trichologist, explained in our damaged hair treatments guide, it can stem from everyday habits like brushing, hair ties, extensions, and friction in general.

Naturally, I fell down a TikTok rabbit hole in search of routines that could potentially help me in my pursuit for longer, stronger hair—which, of course, led me to trichologist and hair influencer Abbey Yung who keeps Epres’s Bond Repair Treatment as a constant in her extensive routine. Needless to say, Yung’s impressively long and beautiful lengths convinced me, and I became a disciple of her routine recommendations. Armed with a solid pre-shampoo routine, I’ve kept up with it for a month (including lots of hair-oiling).

Applying Epres’s treatment couldn’t be simpler. Just mix one vial of the concentrate with water (I filtered mine to avoid the minerals in New York City’s notoriously hard water), give it a good shake, and thoroughly mist it through dry hair. From there, I simply go about my evening—reading a book, making dinner, or streaming an episode or two on Netflix—before hopping in the shower. Even after the first use, the difference was noticeable. Once my hair was washed, blow-dried, and styled, it felt undeniably softer, looked smoother, and wasn’t weighed down in the slightest—kind of how my hair feels right after a good salon blowout (a texture I’m normally never able to recreate on my own).

About the Epres Bond Repair Treatment

You may not recognize the names of the four ingredients (that’s right, just four), but they actually play a key role in bond repair and come in highly concentrated form. The star of the formula, he explains, is the active ingredient diethylhexyl maleate—the molecule responsible for reconnecting the broken disulfide bonds that give healthy hair its strength and structure. “Those bonds are essentially the scaffolding inside each strand, and chemical services, heat styling and everyday environmental stress are what snaps them,” Dr. Pressly adds.

As a result, the molecule continues to work deep within the hair, “hunting down” broken bonds—a process which the brand calls Biodiffusion technology. “Traditional bond repair depends on getting active molecules deep into the strand, and most formulas can only do that while the hair is wet,” says Dr. Pressly. “Once it dries, those molecules settle wherever they happened to land, and are no longer providing widespread repair.”

How to Use the Epres Bond Repair Treatment

Each kit comes with a fine-mist spray bottle and two vials of product—and, for me, one vial lasted about a month and a half. Once mixed with water (give it a good shake and thoroughly mist onto dry, unwashed hair), the brand recommends using the concoction within two months to ensure maximum efficacy. Whether you leave it on for 10 minutes or overnight while you sleep, the key is to apply it before your “everything” shower. And since the formula is so concentrated, you only need to use it once or twice a week.