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Mary Kay® Lash & Brow Building Serum®

.15 fl. oz.


Mary Kay® Lash & Brow Building Serum®

​Builds thicker-, fuller-looking lashes while improving the look of thin, sparse lashes and brows. See results in just 30 days.

  • Lashes seem more voluminous.
  • Lashes look maximized
  • Brows look healthier.
  • Helps reduce lash loss during makeup removal.

All prices are suggested retail.

Mary Kay® Lash & Brow Building Serum®

View the Video

What Women Are Saying

Women Love Lash & Brow Building Serum®!

“I loved that this product didn’t irritate my eyes. I always wished I had thicker-, fuller-looking lashes and this product did this for me. I loved that it’s an easy, no mess, one-step application to get results. I love my new lashes. I also had over-tweezed brows and wished they were fuller like when I was younger. This product really did make a difference.”

Maria D., Orlando Hills, Ill.

“There were so many things I liked about this product. Having fuller- and healthier-looking lashes, I feel like I don’t have to wear false eyelashes. And after using the product on my eyebrows, I was very pleased at the results. I have to say that having fuller-looking eye brows and not having to fill them in with liner or powder feels great.”

Shavonne S., Dolton, Ill.

“The product is very easy to use. It’s not irritating to my eyes. I noticed an overall change in the appearance of my lashes. They look longer, stronger and fuller.”

Kristy B., Dallas, Texas

See the Incredible Before and After!

Seeing is Believing!

These images were taken of panelists who participated in a four-week independent consumer study.




View the Amazing Results!

7 out of 10 Women Said Lashes Appeared Fuller.*

Wouldn’t you like to be able to say that? Here’s what else women told us after using Mary Kay® Lash & Brow Building Serum® once a day for one month during an independent study:

80% said it helped reduce lash loss.
77% said it reduced lash brittleness and breakage.
76% said the look of thin, sparse lashes was improved.
65% said the look of thin, sparse brows was improved.

*Results reflect the percentage of women who agreed with the statements during a one-month independent consumer study.
During makeup removal

Mary Kay® Lash & Brow Building Serum®

Turn lash envy into lashes that look fuller, look thicker, look maximized. Turn problem brows into the healthy, natural-looking brows you want. All it takes is just seconds a night – and in just 30 days you’ll see the results that women everywhere are already talking about.

Lash & Brow Building Serum® is formulated to help lashes and brows live up to their fullest potential. Lashes appear more voluminous and look renewed. Fewer lashes fall out during makeup removal and brows look healthier. This gentle, fast-drying serum is powered by our Lash Response™ Complex, an essential nutrient boost of amino acids, a peptide and red clover extract. The appearance of thin, sparse lashes and brows is improved. and lashes seem stronger.

Application Tips

  • Apply at night after removing makeup and contact lenses.
  • Apply as you would a liquid eyeliner along the lashline.
  • Apply the formula to sparse or bare areas of the eyebrows in the direction of hair growth.

How It Works

A number of factors can shorten lash life:harsh makeup removers, frequent eye rubbing, aggressive eye curling, and even the aging process itself. And your brows can fall victim to excessive tweezing or careless waxing. Mary Kay® Lash & Brow Building Serum® is your easy solution to lash envy and problem brows.

  • It nourishes. The Lash Response™ Complex adds amino acids to the skin to provide essential nourishment.
  • It protects. Red Clover contains antioxidants. The Lash Response™ Complex contains an extract derived from red clover, a botanical that is known to contain antioxidants that help neutralize free radicals. Free radicals are known to shorten the hair life cycle.

Key Ingredients

This gentle, safe, non-drug formula contains the revitalizing Lash Response™ Complex that contains:

  • Amino Acids help provide essential nourishment.
  • Red Clover extract. Red clover is a botanical known to contain antioxidants that help neutralize free radicals.