How Do Eyebrow Serums Work?


Having full and healthy hair is a heavily desired physical attribute. Whether it’s the hair on the head or the hair on your face, we all want thick and luscious hair growth. Times have changed, and thin eyebrows are no longer the gold standard. Thick is in!

Gone are the days of waxing and plucking — full eyebrows are in! Full eyebrows are more natural looking and can accentuate your already great features. Full brows with a graceful arch can accent your eyes in a way that nothing else can.

They are also easier to maintain once they have grown out. You can put that tweezer away and let your hair grow out!

Unfortunately, just as the hair on your head can become thinner over time, age-related hormonal changes can also decrease your eyebrow density. As a result, you may notice gaps and visible skin in areas of the brow bone where you’ve never before had problems. 

This will make it harder to have the full-brow look you desire. This is just another part of the aging journey, but it does not have to bring you down.

On the other hand, maybe you’ve always had thin brows or made the mistake of over-plucking to create a shape. Regardless of the reason for your strand scarcity, eyebrow serums may help by creating the appearance of fuller, healthier brows.

Regardless of the cause of your thin eyebrows, there are remedies that can assist you on your journey to thick eyebrows. 

Hope for Thinning Brows

If you are trying to get your eyebrows to come back or grow in thicker, brow-enhancing serum may be for you. The great thing about over-the-counterbrow growth serums is that they are a much better solution than constantly penciling them in with makeup. These beauty products come in different forms, from quick fixes to longer-lasting products.

What is eyebrow serum? Much like scalp serum, it is a liquid treatment that you apply directly to your skin and hair in areas where you want more strands—in this case, on the brow bone. 

There are several ways that serums work to improve brow hair fullness: 

  • Coating the strands: Certain eyebrow serums plump your individual hairs, creating the illusion of fullness by coating and separating each strand.
  • Tinting the hair and surrounding skin: Serums infused with color will temporarily tint your eyebrows and the skin between the hair fibers. Hair loss is completely natural in eyebrows as you age.This type of serum is perfect if you have noticed hair loss in your brows. This decreases your gaps and makes it appear that you have more hair than you do. 
  • Penetrating the skin and follicles: Eyebrow serums that offer a long-term solution to thinning brows nourish and stimulate your follicles on a cellular level. As a result, their ingredients support thicker, fuller brows with less hair fall over time.Healthy hair follicles are the key to having healthy hair. 

How Do Growth Serums Work?

Eyebrow and eyelash serums work very similarly. Both brow and lash serums use a combination of peptides, biotin, and hair-supporting oils to strengthen your existing hair. 

These products may also feature collagen. Collagen is a protein that contains many of the amino acids needed to make keratin, the primary building block of all human hair. This is how some eyebrow conditioners support hair regrowth.

Some brow serums also feature botanicals, such as green tea extract, or antioxidants, such as vitamin C, which help support your body’s natural defenses against oxidative stress and protect new growth. These brow boosters may also feature ingredients to help support your hair’s natural growth cycle and strengthen new hair.

As always, consult your dermatologist before using a new product. They may have alternative suggestions based on your skin type or skin history.

How Long Do Eyebrow Serums Take to Work?

Serums that work by coating or tinting your strands typically offer immediate results. For example, your eyebrows instantly appear darker and thicker than before. These serum types also rinse away thoroughly when you shower or wash your face, and your freshly washed brows will be ready for a new application.

Using these serums is great if you are looking for a quick fix for a night out but don’t want the commitment of microblading.

Conversely, eyebrow serums that encourage long-term results take more time for those initial improvements to become visible. Why? Because eyebrow hairs grow considerably slower than other body hairs. It may take two to three months of daily applications before you witness noticeable thickening. The great part about using these serums is that once the results have kicked in, you can drop the quick fixes from your skincare routine and keep up with using the longer-lasting serums.

How Do Prostaglandin Eyebrow Serums Work?

Some absorbing brow serums that target the skin contain lipids with hormone-like effects called prostaglandin, which can cause inflammation and other worrisome risks. 

For example, if a brow serum containing prostaglandin gets into your eyes or on your eyelid, it can lead to:

  • Redness.
  • Itching eyes.
  • Discoloration of your eyelids or iris.
  • Drooping eyelids.
  • Clogged tear glands.
  • Blurry vision
  • Lowered eye pressure (if the serum touches your eyes).

Although these products can lead to results, the risky side effects may not be worth it in the long run. Try to stay clear of this ingredient, but if you use prostaglandin-based eyebrow serums, take your time when applying the product. 

Use only a tiny amount at a time, so there's no excess that might drip into your eyes. And look for an alternative that has been clinically tested for safety and effectiveness.

What Is the Safest Brow Serum?

A safe brow serum provides a nontoxic conditioning serum that is sensitive enough to put around your eyes. Safe eyebrow serums can also be used daily without damaging your hair follicles. 

There are a few safe serums out there. We at Better Not Younger have a serum that is safe and easy to use!

Better Not Younger’s Superpower Night & Day Brow Enhancing Duo delivers a tintingbrow serum that works immediately and is a nourishing long-term formula that vitalizes thicker-looking hair over time.

Our formulas are safe and effective, made without prostaglandins, sulfates or parabens that could irritate the sensitive skin around your eyes.

A Tinted Daytime Serum for Instant Results

Each morning before applying your makeup, run the daytime serum applicator wand over your eyebrows using small upward strokes. The bristles plump up your brows and deposit a touch of color right where it’s needed! This is perfect for a quick fix that will have everyone questioning how your hair is so thick!

Our daytime serum is made from a blend of:

  • Vitamin B complex: A vitamin B deficiency can intensify age-related thinning. B vitamins like panthenol and niacinamide work to smooth, moisturize and supply crucial nutrients to your skin and brow hair.
  • Sodium hyaluronate: Sometimes used as a lubricant in eyedrops, sodium hyaluronate is a form of hyaluronic acid that attracts and retains water molecules to both hydrate and thicken the appearance of your eyebrow fibers.
  • Mineral pigments: Provide a natural, subtle tint of color to temporarily fill in sparse brow patches, letting you create the shape you want.

A Nurturing Nighttime Serum for Long-Term Health

Each night before going to bed, use the built-in applicator to dab this colorless serum onto your brows and the skin underneath. Focus your attention on the thinnest patches to condition and fortify your hair follicles while simultaneously promoting optimal brow health. 

You will need a little more patience with this serum, but it’s great in the long run. Stay consistent, and you may see results in as little as a few weeks.

Our nighttime brow serum includes a mix of:

  • Niacinamide: Also known as vitamin B3, niacinamide establishes brighter, smoother skin on your brow ridge.
  • Castor oil: This thick, nourishing oil is known for its eyebrow-thickening effects. It is loaded with triglyceride fatty acids that smooth and condition your brow hairs. Additionally, castor oil strengthens and protects strands against breakage and premature hair loss.

Biotinoyl tripeptide-1: Each eyebrow hair grows from a single follicle. When they become dormant or unproductive, fewer strands grow, and your eyebrows become progressively thinner. Biotinoyl tripeptide-1 is a crucial ingredient that supports stronger and healthier brow-hair follicles.

Beauty Solutions from Better Not Younger



Don’t settle for balding, over-plucked brows. Get brows that are thick to have you looking your best! With Better Not Younger’s one-of-a-kind eyebrow duo, you can add immediate volume and color to your brows while setting the stage for bolder arches in the weeks to come! 

Superpower Night & Day Brow Enhancing Duo is the perfect brow-enhancing companion to your overall beauty routine. All Better Not Younger skin and hair-care products are designed to work together and solve the age-related hair and skin challenges we all face in our 40s and beyond. 

Find our new Superpower Night & Day Brow Enhancing Duo and Superpower Lash Enhancing Serum by visiting our online Shop page today!


Eyebrow serum can turn your once thin brows into thick ones that make your eyes stand out even more. Eyebrow serum can come in handy when wanting either a quick fix or a long-term one. 

Be patient when wanting long-term results. It takes time and consistency to see changes. Make our products a part of your everyday routine, and you will see results.

Remember that we at Better Not Younger are here to help with all your hair care needs and concerns as you get to the best parts of your life!



Eyebrow loss: clinical review | PMC

Comparative Study of the Online Over-The-Counter Hair Loss Products | Journal of Dermatology Research and Therapy