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GrowPotion

Fluffy Brow + Lash Boosting Serum

 (76)

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Manifest Your Best Brows + Lashes.
Clean 2-in-1 brow and lash boosting serum powered by peptides and vegan keratin that accelerates the appearance of fuller, feathery brows and longer, thicker lashes. Safe for sensitive eyes. Prostaglandin-free.

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Benefits & Ingredients
Trio of Peptides

Supports length + thickness 

Vegan Keratin

Nourishes + strengthens

Pro-Vitamin B5

Promotes shine

Hyaluronic Acid

Hydrates + conditions

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Full-Size Brow & Lash Boosting Serum + Clear Brow Gel

Full Brow Support

GrowPotion Tonight, Brow Team Tomorrow

Treat
New
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Fluffy Brow + Lash Boosting Serum
 (76)
Define + Shape
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Dual-action defining pencil
 (178)
Fluff + Tint
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Volumizing treatment gel
 (280)
Lift + Set
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Lifting treatment gel
 (185)

Haircare Powered, 97% Naturally Derived

Unique blend of peptides and vegan keratin supports hair’s dream environment and is delivered through a hyaluronic acid-powered serum.

Daily Care for Your Littlest Hairs

Helps minimize breakage and loss while leaving brows and lashes soft + fluffy.

GrowPotion Tonight, Brow Team Tomorrow

When we launched Air Brow - Clear, our community was so impressed by the improved appearance of their natural brows, they started to apply it to their brows and lashes overnight.

 Sheena wanted to create a product formulated specifically to wear overnight (without the definition and hold of the brow gel), so we added 6x more powerful and effective hair-boosting actives in a concentrated serum to create GrowPotion.

 Now introducing the nighttime treatment partner to your daytime brow + lash routine.

Kosas Clean

Hypoallergenic. Ophthalmologist tested. Safe for sensitive eyes. Vegan. Prostaglandin-free. Fragrance-free.

Check out our Kosas Clean page for the full list.

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3.7
Rated 3.7 out of 5 stars
Based on 76 reviews
Total 5 star reviews: 30 Total 4 star reviews: 17 Total 3 star reviews: 14 Total 2 star reviews: 8 Total 1 star reviews: 7
62%would recommend this product
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76 reviews
  • M
    monabeauty
    Flag of United States
    3 months ago
    Rated 2 out of 5 stars
    Kosas grow potion

    As an esthetician and a makeup artist for over 6 years, I have loved kosas products and everything that they have ever made I have purchased and tried. This product is supposed to make your brows grow but I unfortunately personally did not see a change in my brows during the time that I used this serum. I used this potion on my lashes but It made my eyes and lashes itchy and watery and very sensitive. I was very disappointed to not see results and get a reaction from this grow potion. I still love the brand and recommend this product to people that don't have sensitive eyes maybe it works better on the eyes than eyebrows. I would not repurchase this product myself, but would love to introduce it to others. It personally did not work for me, but doesn't mean that it won't work for others.

    **This review was created through an educational promotional event hosted between the brand and beauty experts.**

  • SL
    Stephanie L.
    Verified Reviewer
    Age Range 25 - 34
    Astrology Air — Gemini; Libra; Aquarius
    Hair Color Brown
    Skin Tone Fair
    Skin Type Dry
    Recommend Yes -1000%
    4 months ago
    Age Range 25 - 34
    Astrology Air — Gemini; Libra; Aquarius
    Hair Color Brown
    Skin Tone Fair
    Skin Type Dry
    Recommend Yes -1000%
    Rated 5 out of 5 stars
    GREAT!

    I’ve been using this since August and it’s made a difference! I personally noticed a difference within a WEEK but everyone’s different. Here I am in November and still loving this product. My lashes were long-ish to begin with, but now they are curly and others have noticed it too! You can tell by the darkness of my lash line. I’ve recommended this to so many others, but remember PATIENCE and CONSISTENCY IS KEY.

  • D
    deemua
    Flag of United States
    4 months ago
    Rated 1 out of 5 stars
    not for me

    My eyelashes have always been really thin and my brows are sparse due to overplucking in the past. So, I was super excited to have received this because my lashes and brows needed a miracle! I used this product for about a week and gave up. To be quite honest, I did not care for this product. It's thick and leaves a sticky film on my lashes after applying. My lashes got flaky as well. The film is like when you were a kid and got glue on your fingers and had to peel it off. Not fun or ideal! According to Kosas, they encourage you to try GrowPotion for 12-16 weeks to start seeing the results, but I couldn't even get past the first week. If Kosas ever decides to reformulate, I will absolutely try it again, but as of right now, I will not continue to use this nor will I repurchase.

    **This review was created through an educational promotional event hosted between the brand and beauty experts.**

  • M
    mindfulbeaute
    Flag of United States
    5 months ago
    Rated 4 out of 5 stars
    Kosas GrowPotion Fluffy Brow + Lash Boosting Serum

    Kosas Grow Potion Fluffy Brow + Lash Boosting Serum is a clean multi-purpose serum that boosts and accelerates the health of both your brows and lashes.In trying out this product consistently every day as directed I do see a change in the health of my brows. I used it less on my lashes since I do have a very sensitive eye area so it's best for me to not use too many products in that area. However this clean, vegan, hypoallergenic formula did not cause any discomfort or reaction in my eye area. The way to use this product is to apply on clean dry skin and allow the product to absorb and dry before applying any other products. The packaging is beautiful and the applicator is super soft and flexible which allows for a seamless application.

    **This review was created through an educational promotional event hosted between the brand and beauty experts.**

  • B
    brilatty
    Flag of United States
    5 months ago
    Rated 3 out of 5 stars
    Not great for lashes

    As a beauty professional, and an avid lover of mascara and false lashes, I am quite the connoisseur of lash serums. I always try to include a lash serum in my routine to ensure that my lashes and brows stay full and thick. The Kosas GrowPotion Fluffy Brow + Lash Boosting Serum was created with peptides and keratin to nourish hair follicles to promote healthy lashes and brows. I thoroughly enjoyed the serum for the brows. Over the course of 8 weeks, I can tell that my brows are thicker and sparse areas are starting to come in. However, I did not like the serum for my eyelashes. It put a film on my lashes that created crusties and eye "gunk". I even tried using a disposable mascara wand instead of the included brush and it still was too much. I will continue to use this product for my brows but I will use a different product for my lashes.

    **This review was created through an educational promotional event hosted between the brand and beauty experts.**

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