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Does Lash Serum Work For Eyebrows

Does Lash Serum Work For Eyebrows

By Josef Mohamed

Jun 18, 2025
does lash serum work for eyebrows

Lash serums promise longer, fuller lashes, but they can come with unwanted side effects. Users have reported skin irritation, eye discoloration, and even changes in eye color. Some ingredients, like prostaglandin analogs, are known to cause these issues.

If you’re using or thinking about using a lash serum, you need to know what’s in it, how it works, and what it could do to your eyes and skin. In this guide, we’ll break down the risks, explain what to watch for, and show you safer alternatives.

Can you use lash serum on your eyebrows? Yes, you can - and it might even be a great idea. Lash serums are made to help hair grow, and your eyebrows are hair too! If you’re thinking about using your lash serum on your brows, you’ll want to know how to do it right, what to expect, and whether it’s truly worth it.

In this article, we’ll explain everything you need to know about using lash serum on your eyebrows. We’ll cover how it works, what ingredients to look for, the pros and cons, and how to apply it properly.

  • Eye Irritation: Some individuals experience a burning sensation, particularly if the serum gets into the eyes.
  • Redness: The skin around the eyes can become red and irritated. It can happen because of direct contact with the serum or a reaction to specific ingredients.
  • Itchiness: Itching could be a sign of not only sensitivity to serum and its specific ingredients, but also an allergic reaction.
  • Melanin and Hyperpigmentation around the Eyelids: Continuous use of certain serums can lead to increased pigment around the eyelids.
  • Orbital Fat Loss: Though rare, some lash serums can cause a decrease in orbital fat, making eyes look sunken.
  • A Permanent Change in Iris Color occurs rarely but mostly affects people with light-colored eyes.
  • Dryness: Some users report dryness around the eyes, which could be due to the alcohol content in certain lash serums.
  • Swelling: In some cases, users might experience swelling around the eyes.
  • Allergic Reaction: Allergic reactions can range from mild itching to more severe swelling and redness.
  • Noticeable Blood Vessels can emerge after prolonged use of the product, also accompanied by drooping eyelids among users.

The majority of side effects will disappear after you stop using the serum, yet not every effect will vanish. Before applying any product near your eyes, you should always check its ingredients, perform a patch test, and consult with a professional if you are in doubt.

Does Lash Serum Really Work for Eyebrows?

Yes, lash serums can work on eyebrows. The ingredients that help your lashes grow are the same kinds of ingredients that can help your brows grow. These serums usually include biotin, peptides, amino acids, and plant extracts. 

When you use lash serum on your eyebrows, you’re feeding the hair follicles the nutrients they need to grow. Just like your lashes, your brow hairs go through a growth cycle. This means with regular use, you can start to see your eyebrows become thicker and healthier.

But not all lash serums are the same. Some are better for brows than others. If you're using a lash serum on your eyebrows, make sure it's oil-free and gentle. Look for key ingredients like biotin, panthenol, and natural plant extracts. And remember, it takes time - most people start seeing changes after 8 to 12 weeks of daily use.

  • Prostaglandin analogs (like bimatoprost, latanoprost, isopropyl cloprostenate) are the most powerful but also the most risky. They can cause side effects like eye discoloration, redness, and fat loss around the eyes.
  • Peptides are much milder. They support lash growth and repair without major risks, making them a safer pick for sensitive eyes.
  • Botanical extracts (like castor oil or green tea) sound natural, but they can still cause allergic reactions in some people.
  • Preservatives, fragrances, and silicones are often added to improve texture or shelf life, but can lead to irritation or sensitivity, especially if you have delicate skin around your eyes.

Always check the ingredient list before using any lash serum. If your eyes tend to react easily, go for formulas without prostaglandins and minimal extras.

a young woman with beautiful lashes

Key Differences to Consider

Before you grab your lash serum and start brushing it through your brows, there are a few things to think about:

  • The Brush: Lash serums have tiny brushes made to put serum on your eyelid. Your eyebrow covers a bigger area, so that little brush might not spread the serum evenly. You may need a few extra swipes to cover all your brow hairs.
  • Wasting Product: Because it takes more serum to cover your brows, you might use up your lash serum faster. This could mean you’ll need to buy more often.
  • Skin Sensitivity: The skin on your eyelids is very delicate, but the skin under your brows is a bit tougher. That’s good news! It means you’re less likely to get irritation when using lash serum on your brows - just be sure to keep the area clean.
  • Hair Growth Time: Your lashes and brows grow in cycles. Lashes can start to grow in about 3 months, but brows usually take a little longer - around 4 months. So be patient and give the serum time to work.
  • Stay Inside the Lines: Lash serum can make hair grow wherever it’s applied. So be careful not to put it outside your brow line.
  • Keep it Clean: If you use the same brush for your lashes and brows, you might move dirt or oils from your brows to your eyes. That could cause irritation. To be safe, apply to your lashes first, then your brows - or use a separate brush.
a young woman uses lash serum on eyebrows

How to Apply Lash Serum to Your Eyebrows Properly

Applying lash serum to your brows is easy, but there are a few steps you should follow:

  • 1. Start with a clean face. Make sure your brows are free from makeup, oils, or lotions. Wash your face and dry it gently.
  • 2. Use a little at a time. One dip of the serum brush is enough for both brows. Swipe it gently across your brow line—one swipe on the inner part, one in the middle, and one at the end of your brow.
  • 3. Be careful where you put it. Don’t put the serum too high or too low on your skin. You only want to apply it where you want hair to grow.
  • 4. Let it dry. Wait about a minute for the serum to dry before putting on other skincare or going to bed.
  • 5. Apply at night. It’s best to use the serum before bed, so it can work while you sleep.
  • 6. Use it every day. Be consistent! Apply the serum every night. It might take 8 to 12 weeks to see full results.
  • 7. Keep things clean. If your brush touches your fingers or your skin, clean it before putting it back in the bottle. This keeps your serum free from bacteria.

Use it every day. Be consistent! Apply the serum every night. It might take 8 to 12 weeks to see full results.

Pros and Cons of Using Lash Serum on Brows

Let’s look at the good and not-so-good parts of using lash serum on your eyebrows:

Pros:

  • The same ingredients help your brows grow stronger and fuller.
  • It’s usually gentle on the skin.
  • You may save money if you already have a lash serum.

Cons:

  • The small brush might not cover all of your brow area easily.
  • You’ll use more product, so it might run out faster.
  • Using the same brush for eyes and brows could spread dirt - be clean and careful.

Final Thoughts

Using lash serum on your eyebrows is a smart way to get fuller brows, especially if the serum has the right ingredients. It’s a simple, budget-friendly trick that can save you time and money. Just remember to apply it carefully and consistently, and don’t expect instant results.

If you want something even better, try our ForChics Lash Serum and ForChics Brow Serum. Our products are made to help your hair grow naturally and safely. The Lash Serum is great for delicate lashes, and the Brow Serum has a special brush that makes applying it easy and quick. Plus, both are vegan, cruelty-free, and easy to use every night.

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Josef Mohamed is a Content Marketer and Web Designer with over 6 years of experience. He brings a wealth of knowledge to his work, making him a reliable source for readers interested in practical insights about beauty. His writing style is straightforward, aiming to provide real facts and avoid common myths in the beauty industry.

image.jpg__PID:02770919-8e65-4213-a922-248fe0752c3a

Josef Mohamed is a Content Marketer and Web Designer with over 6 years of experience.He brings a wealth of knowledge to his work, making him a reliable source for readers interested in practical insights about beauty. His writing style is straightforward, aiming to provide real facts and avoid common myths in the beauty industry.