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If you’ve noticed more hair in your brush, a widening part line, or thinning around your temples, you’re not alone. Hair thinning affects millions of women for a lot of different reasons (hormonal shifts, pregnancy, aging, and stress, just to name a few).
It can be particularly gut-wrenching to see your hair lose its fullness. But that doesn’t mean your luscious locks are gone for good. Several clinically studied ingredients can help address the root cause (pun intended) of hair loss in women—and through Shed, you can get all the ingredients in one treatment.
But first, let’s break down the ingredients that help manage key contributors to female hair thinning.
Minoxidil
Minoxidil is the most clinically studied topical ingredient for hair loss and is FDA-approved for use in both women and men. Originally developed as a blood pressure medication, researchers discovered an unexpected “side effect”: its remarkable ability to stimulate hair regrowth when applied to the scalp.
Minoxidil works by widening blood vessels in the scalp, improving circulation to hair follicles and delivering more oxygen and nutrients to the root. This process helps extend the anagen (active growth) phase of the hair cycle, essentially keeping more hairs in the growing state for longer. It also helps revive miniaturized follicles—follicles that have shrunk due to hormonal or genetic factors—restoring them to healthier function.
Studies have shown minoxidil to be effective at reducing shedding and increasing hair density in women with androgenetic alopecia (female pattern hair loss). It does take time to see meaningful change though (a few months or more), and some women see a temporary increase in shedding when they first start minoxidil. Consistent use—and patience!—over time is key to getting the desired results.
Tretinoin
Tretinoin is a prescription-strength retinoid derived from vitamin A. It is widely recognized in dermatology for its ability to accelerate cell turnover and is commonly used to treat acne and improve skin texture. When incorporated into a hair serum, tretinoin serves a specific function: supporting the penetration of other active ingredients into the scalp. Think of it as the ingredient that amplifies the entire formula.
The scalp’s outer layer, like skin elsewhere on the body, can act as a barrier to topical treatments. Tretinoin promotes healthy cellular turnover on the scalp surface, which helps keep follicles clear of buildup and creates a more receptive environment for ingredients like minoxidil to absorb and work more effectively.
Biotin
Also known as vitamin B7, biotin is a water-soluble vitamin that plays a foundational role in the body’s production of keratin, the primary structural protein that makes up hair, skin, and nails. It’s one of the most popular ingredients in the hair-care world, found in countless supplements, shampoos, and topical formulas.
While severe biotin deficiency is rare, research confirms that biotin supplementation can support hair health in women who have a biotin deficiency. When applied topically, biotin helps nourish the follicle environment and supports the production of stronger, more resilient hair strands.
Biotin is widely available as an oral supplement and is also found in foods like eggs, almonds, sweet potatoes, and spinach. When applied topically, it delivers direct scalp-level support that oral supplements and foods alone may not provide.
Important note: High doses of biotin can interfere with some common lab tests, so if you’re taking it, let your clinician know before taking any lab tests.
Fluocinolone
Fluocinolone acetonide is an anti-inflammatory medication used topically to calm irritated or inflamed skin. In the context of hair treatment, it addresses one of the most overlooked contributors to female hair thinning: scalp inflammation.
When the scalp environment is inflamed—whether from skin conditions, hormones, immune reactions, or other factors—follicles become stressed and may prematurely enter the resting (telogen) phase of the hair cycle, leading to increased shedding. Fluocinolone helps to calm this inflammatory response, creating a healthier environment for hair follicles to thrive.
Important note: Fluocinolone should only be used as directed, as overuse can irritate the scalp over time.
Vitamin E
Vitamin E is a fat-soluble antioxidant naturally present in skin and hair. It’s been used in skincare and hair care for decades due to its ability to protect cells from oxidative stress. In hair formulations, vitamin E supports overall scalp health and helps maintain the integrity of the follicle environment.
Oxidative stress is increasingly recognized as a contributing factor to hair thinning, particularly in women experiencing hormonal shifts or aging. Vitamin E helps neutralize free radicles on the scalp, protecting follicle cells from damage and supporting healthy circulation.
In Shed’s 5-in-1 formula, vitamin E acts as the protective, nourishing layer that rounds out the serum’s multi-angle approach to hair health.
Get all 5 ingredients in 1 formula
Finding all these ingredients on their own can be challenging, especially since some of them are only available via prescription. Shed’s Women’s 5-in-1 Hair Serum makes it easy to get all these ingredients in a single, once-daily treatment.*
Whether you’re experiencing postpartum shedding, hormonal hair thinning, or age-related changes in hair thickness, Shed’s Women’s 5-in-1 Hair Serum is designed to address the underlying issues from multiple angles.
Ready to try it for yourself? Visit tryshed.com today to see if you qualify.
Frequently asked questions
What causes hair thinning in women?
Female hair thinning has many potential causes, and it’s often a combination of factors instead of just one. The most common culprits include hormonal changes (like those that occur during perimenopause or after pregnancy), genetics, chronic stress, nutritional deficiencies, and underlying scalp conditions. This is why most effective treatments tend to take a multi-ingredient approach so they can address several contributors at once.
How long does it take to see results from hair-thinning treatments?
Hair growth is a slow process, so patience and consistency are important. Most women begin to notice a reduction in shedding within 8–12 weeks of consistent use. Visible improvements in thickness typically emerge after 3–6 months. Because hair grows in cycles, skipping applications or stopping treatment too early can interrupt progress. Consistency is everything!
Is minoxidil safe for women to use?
Yes. Minoxidil is FDA-approved for use in women and is the most clinically studied topical ingredient for female hair loss. That said, the right concentration and formulation matters, which is why prescription-grade or compounded versions like those found in Shed’s Women’s 5-in-1 Hair Serum are prescribed by a licensed provider based on your individual health history.
Can I use these ingredients if I’m postpartum or breastfeeding?
While these ingredients are designed to address many contributors to hair thinning—including postpartum shedding—some are not recommended during pregnancy or while breastfeeding. Anyone who is pregnant, breastfeeding, or planning to get pregnant should confirm safety with their clinician before starting medications with any of these ingredients.
Can I use the Women’s 5-in-1 Hair Serum alongside other hair products?
In many cases, yes—but it’s important to discuss your full product and supplementation routine with your provider during your consultation, as some ingredients can interact or overlap. Your provider can help you build a hair routine that’s both safe and effective.
This information is for educational purposes only and is not a substitute for medical advice. Please consult your healthcare provider before starting or changing any medication.
*Compounded medications are prepared by licensed pharmacies to meet individual patient needs. While they are not reviewed or approved by the FDA for safety or effectiveness, they are made in accordance with strict regulatory guidelines.. Medication is prescribed only after consultation with a licensed provider to determine appropriateness. Product images are for illustrative purposes only. Individual results may vary.
