What Two Women's Health Staffers Learned From Testing OMI's New Hair Growth Peptides

Hair loss is one of those experiences that’s deeply personal and more common than you might think. More than half of all women will experience noticeable thinning or shedding at some point in their lives,[1] and the reasons why are varied. Postpartum hormone shifts. Perimenopause. Stress. Highlights or other chemical hair processes. Sometimes all of the above, all at once.

Which is part of what can make hair thinning challenging to treat. When the root cause is difficult to pin down, finding the right solution becomes a process of elimination rather than a clear path forward.

That's exactly the gap OMI's two newest products, Harmonize and Revitalize, were designed to address. These formulations target the specific biological pathways behind two of the most common drivers of women's hair loss: hormonal shifts and stress. To find out whether they actually deliver, Women's Health special projects director Amanda Lucci and designer Leanne Mattern took them daily for eight weeks. Here's what they learned.

1. Consistency Is Everything

Hair growth is a slow, cyclical process. Each follicle moves through active growth, transition, rest, and shedding on its own timeline, and disruptions to that cycle; stress, hormones, or nutrient depletion, can take months to show up as visible shedding.[2] [3] Reversing that disruption takes time too. OMI recommends at least three months of use for full results; Lucci and Mattern used the capsules for eight weeks, and they reported seeing early signs of progress in that time.

For Lucci, who tried Revitalize to address stress and post-partum related shedding (she noticed hair thinning about four months after having her first baby), taking the capsules daily paid off. She reported that her temporal hairline looked noticeably fuller after eight weeks, with more baby hairs and less scalp visibility. Mattern, who used Harmonize for what she thought might be hormone-related thinning, said that she noticed her hair felt thicker at the scalp and saw new baby hairs along her hairline. "I think over a longer period of time, I would notice more growth all over my head," she says.

The takeaway: peptides work by supporting the underlying biology of hair growth. That means results are real, but they require patience and consistency to see.

2. Take It As Directed. (Really!)

OMI's capsules contain zinc, which plays an important supporting role in how the peptide blend works. Zinc is essential for protein synthesis, and since hair is made primarily of keratin, a structural protein, adequate zinc helps ensure the body can actually use the peptides to build stronger, healthier hair.[4] It also supports the regulation of hormones involved in the hair growth cycle,[5] making it an important ingredient in formulas targeting hormonal shedding.

One note: Zinc on an empty stomach can be hard on the digestive system, and both Lucci and Mattern reported experiencing nausea and stomach discomfort when they didn’t take the capsules with or after eating a full meal. The fix is simple: Take the capsules with a substantial meal. And when Lucci and Mattern did that, they didn’t experience gastrointestinal discomfort.

3. Understand What You're Treating 

Hair loss can have multiple causes, so that’s why it’s important to talk to your doctor who can help you figure out the best treatment plan. Mattern's hair story is a good illustration of how many factors can come into play. She said she’s always had naturally fine hair that she’s dyed and bleached over the years, but only in the past two years noticed a significant increase in shedding. She also recently started a new IUD and began noticing more acne. 

This is precisely the scenario Harmonize was designed for. When estrogen levels drop, as they can with certain hormonal contraceptives, postpartum, or during perimenopause, the hair growth cycle can shorten, meaning more follicles shift into the resting and shedding phase at once.[6] Harmonize addresses this through a combination of bioactive fenugreek extract (which may help support estradiol levels, a form of estrogen associated with a longer growth phase), saw palmetto (which may help promote hair growth in people experiencing thinning), B vitamins and biotin (which are directly linked to hair loss when deficient),[7] and OMI's core IFP-131™ peptide technology.

That last ingredient, the Intermediate Filament Peptide, sourced from the wool of grass-fed New Zealand sheep, is what makes OMI's formula unique. Peptides act as signaling molecules, essentially unlocking biological functions that have gone dormant.[8] In the context of postpartum or hormone-related hair loss, they support the structural integrity of the follicle itself, helping hair grow back thicker and more resilient as hormones restabilize.[9] Mattern's results, thicker-feeling hair at the scalp, new baby hair growth along her hairline, are consistent with the kind of follicle-level activity the peptide blend is designed to stimulate.

4. Be In It for the Long Game

There's something worth acknowledging that doesn't show up in before-and-after photos: the psychological weight of hair loss. For many women, actively doing something about it can reduce the anxiety around shedding almost as much as the shedding itself. And that’s what Mattern said made the difference for her.

The clinical results back up the patience required. OMI's 90-day study found that Harmonize reduced hair loss by up to 47%, while Revitalize reduced hair loss by the same amount, reduced cortisol by 24%, and reduced other markers of stress by 69%. Those outcomes took three months, and the Women's Health editor and designer, who tested for eight weeks, saw early but meaningful progress before reaching that full amount of time.

Hair growth treatments work by supporting the underlying biological conditions that healthy hair depends on, including follicle function, hormone balance and stress regulation, and that kind of change compounds over time. For women navigating the slow, frustrating experience of thinning, the most important thing may be to: stay consistent long enough to let science do its job.

The Takeaway

Hair loss is rarely simple, and neither is treating it. What’s unique about OMI's Harmonize and Revitalize is the specificity of the approach. They’re formulations designed around the actual biology of why hair thins, whether that's hormonal shifts, chronic stress, or structural changes at the follicle level. The Women's Health editors saw real early results in eight weeks. The full picture takes longer. But for women who are tired of guessing and ready to address the root cause, these capsules offer a compelling, science-backed place to start.

Frequently Asked Questions

How long does it take to see results with OMI's hair growth peptides?

It takes at least three months to see full results, which aligns with how long the hair growth cycle takes to respond to targeted support. That said, early changes, thicker-feeling hair, new baby hair growth, and improved scalp coverage, can happen within eight weeks. Consistency matters more than speed here: the longer you stay with it, the more the results compound.

What should I consider when deciding whether to take Harmonize or Revitalize?

It comes down to what's driving your hair loss. Harmonize is designed for hormone-related thinning; think postpartum shedding, perimenopause, or changes related to hormonal birth control. Revitalize targets stress-related shedding and aging, weakened hair, with adaptogens like ashwagandha and rhodiola that work to lower cortisol and build the body's resilience over time. If both feel relevant, it's worth talking to your doctor about which underlying factor is more likely at play.

Are there any side effects of OMI Hair Growth Peptides to be aware of?

The main one to know about is nausea due to the zinc, which is essential to supporting the effectiveness of the peptide but can be hard on your digestive system. The queasiness or stomach discomfort can happen if you take the capsules without enough food. Both Women's Health staffers experienced this, and both were clear on the fix: take them with a full meal, every time. Beyond that, the capsules have a noticeable turmeric scent, so handling them minimally helps. Otherwise, the day-to-day experience was straightforward and easy to maintain.