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Thrive Causemetics

Liquid Lash™ Extensions Lash and Brow Serum

$56

Apply our peptide-powered serum to eyelashes to achieve longer- and fuller-looking lashes in 8 weeks, or apply to eyebrows to hydrate and condition for fuller, healthier-looking brows over time. This formula is gentle, ophthalmologist-tested to be safe for sensitive eyes, and full of proven botanical ingredients. It's perfect if you're looking for a lash serum without prostaglandin. The same sodium hyaluronate and amino acid blend that nourishes the lashes and lash line works to hydrate and condition brow hairs and the skin beneath them.

We think you will love our serum, but if you don't, no worries! Enjoy easy returns with our return + exchange process.

What Makes It Different

  • Limitless Length Volumizer™ promotes the appearance of healthier-, fuller-, and longer-looking lashes after consistent use in just 8 weeks.

  • Conditions brows to look fuller and more defined, especially helpful for sparse or over-tweezed areas.

  • Hydrates the delicate skin around the eyes and along the brow line for fuller, healthier-looking lashes and brows.

  • Our transformative lash and brow serum is ophthalmologist-tested and made without ingredients known to cause irritation or be harmful during pregnancy.*

*consult physician before use while pregnant.

How to Use

  • For lashes: Apply to clean, dry skin. Sweep applicator brush along the eyelash line. Use once daily in the evening before bed. Allow 1 to 2 minutes to dry.

  • For brows: Apply to clean, dry skin. Sweep applicator brush along the brow line in the direction of hair growth, focusing on sparse or over-tweezed areas. Use once daily in the evening before bed. Allow 1 to 2 minutes to dry.

  • While our serum is designed for both lashes and brows, we recommend using a separate tube for each area to support optimal hygiene and ensure the best application experience.

  • Boost moisture levels of the delicate eye area with Bigger Than Beauty Skincare® Defying Gravity™ Eye Lifting Cream for lifted and tightened results.

Ingredients

  • Peptide-powered and loaded with biotin and sodium hyaluronate, our serum conditions and hydrates for healthy-looking lashes, lids, and brows.

  • 100% vegan + cruelty-free! Our high-performance products are always formulated without parabens, phthalates, sulfates and synthetic fragrance.

Full Ingredients List

Karissa's Pro Tip

For best results on lashes, apply to the skin closest to the lashes (the lash root), not the actual lashes. One dip into the bottle is enough serum for both eyes. For brows, use a separate tube and sweep along the brow line in the direction of hair growth, focusing on sparse or over-tweezed areas.

Your purchases have given back $150 million+ to help communities thrive. SEE HOW
Your purchases have given back $150 million+ to help communities thrive. SEE HOW

Real Results

*In A Clinical Lash Length Evaluation Of 32 Subjects After 8 Weeks Of Product Use, Once Daily.

**In A Clinical Lash Volume Evaluation Of 32 Subjects After 8 Weeks Of Product Use, Once Daily.

***In A Consumer Perception Study Of 32 Subjects After 8 Weeks Of Product Use, Once Daily

****In A Consumer Perception Study Of 32 Subjects After 12 Weeks Of Product Use, Once Daily

100%

of users showed an increase in lash length*

100%

of users showed an increase in lash volume**

100%

100% of users said that Liquid Lash™ Extensions Lash and Brow Serum was easy to use***

100%

of users said the thin brush of Liquid Lash™ Extensions Lash and Brow Serum allows for easy, precise application***

100%

of users did not experience any irritation when using Liquid Lash™ Extensions Lash and Brow Serum***

91%

of users said their lashes look healthier after using Liquid Lash™ Extensions Lash and Brow Serum****

88%

of users said their lashes look longer and more voluminous with mascara after using Liquid Lash™ Extensions Lash and Brow Serum consistently***

84%

of users experienced less lash loss during makeup removal after using Liquid Lash™ Extensions Lash and Brow Serum***

Details

  • What Else You Need to Know

    Gentle yet effective, this high-performance serum provides transformative results for both lashes and brows. Apply to eyelashes to promote longer- and fuller-looking lashes, or apply to eyebrows to hydrate and condition brow hairs and the skin beneath them for the appearance of fuller, healthier-looking brows over time. Especially helpful for sparse brows or over-tweezed areas, and a go-to if you're looking for a lash serum without prostaglandin. Formulated with sensitive skin in mind, Liquid Lash™ Extensions Lash and Brow Serum is dermatologist-, ophthalmologist-, and allergy-tested. If you have known allergies or sensitivities, we recommend consulting the full ingredient list or performing a patch test.

    • Paraben-Free
    • Sulfate-Free
    • Formulated without Phthalates
    • Vegan
    • Cruelty-Free
    • No Synthetic Fragrance

  • 0.10 fl oz / 3 mL

  • Made in the USA of global ingredients

CB9 LiquidLashExtensionLashSerum

Ingredients

  • Full Ingredients List

  • Power 5-Peptide Blend

    A unique blend of 5 powerful peptides visibly improves eyelash and eyebrow volume by conditioning the hairs to provide healthier-, longer-, fuller-, and stronger lashes and brows.

  • Biotin

    Also known as Vitamin B7, Biotin nourishes and helps improve the quality of keratin structures for fuller, healthier-looking eyelashes and eyebrows.

  • Sodium Hyaluronate

    Holds 1,000 times its weight in water to hydrate and replenish moisture, conditioning skin and hair for more youthful-looking eyelashes and eyebrows.

  • Amino Acid Blend

    Amino acid blend moisturizes and helps nourish skin and hair for healthier-looking lashes and brows.

  • Organic Pea Sprout Extract

    Helps improve hair’s vitality for visibly stronger and denser lashes and brows.

Frequently Asked Questions

    • How can I apply lash serum?

      Applying lash serum is easy. Start with clean and dry skin, and make sure to remove your makeup and contact lenses before using the serum. Then, close your eyes and move the wand along your upper lash line, maneuvering the applicator from the inner corner of your eye to its outer edge. You only need a thin layer on your top lashes, as the serum will apply to your lower lashes when you blink. Repeat on your other eye.  

      After allowing the formula to dry, you can nourish the skin around your eyes with your favorite eye moisturizers.

    • How often do I need to apply the serum?

      You only need to apply once per day, and we recommend applying nightly before bed for best results.

    • Can I use this serum on my brows?

      Yes! Our serum is designed for both lashes and brows. Apply to eyelashes to achieve longer- and fuller-looking lashes in 8 weeks, or apply to eyebrows to hydrate and condition for fuller, healthier-looking brows over time. We recommend using a separate tube for each area to support optimal hygiene and ensure the best application experience.

    • How soon can I expect to see results?

      Your lashes will appear fuller, healthier and longer after consistent use in just 8 weeks.

    • Is the serum irritating for sensitive skin?

      Our clinically tested, high-performance formula provides results with non-irritating, vegan ingredients developed for sensitive skin.

    • Will the serum cause any discoloration?

      Our serum will not result in discoloration and 100% of users did not experience any irritation caused by Liquid Lash™ Extensions Lash Serum.*

      *in a clinical consumer perception study of 32 subjects aged 21-69

    • Can I use the serum with lash extensions?

      Yes, our serum is safe to use with lash extensions.

    • Can I use the serum under makeup?

      While you can use the serum under makeup, we recommend applying in the evening before bed and allowing 1-2 minutes to dry.

    • Can I use the serum if I am pregnant or nursing?

      Our serum is made with gentle vegan ingredients, and is specifically made without ingredients known to be harmful to pregnancy*.

      *please consult your physician before using while pregnant

    • Do you offer a subscription discount?

      We offer free shipping on all of our auto-replenishment products, so you save with every purchase! Our auto-replenishment program will also make sure you never run out of your favorite products. Learn more HERE.

Our Commitment

  • PETA logo featuring a white bunny with the text 'Cruelty-Free and Vegan' in bold, emphasizing animal rights and ethical choices.

    Vegan and Cruelty-Free
  • Leaping Bunny Certified logo featuring a white bunny in mid-leap, symbolizing cruelty-free certification for products that are not tested on animals.

    Leaping Bunny Certified