The Most Common NULASTIN® Questions, Answered | NULASTIN®

At NULASTIN®, transparency is of utmost importance to us. From the real people we use in our marketing to the real results of our clinical trials, we promise to provide you with all of the necessary information to make the best beauty decisions for yourself — that’s the NULASTIN® difference.

Most beauty brands sell you a product promising transformative results but are nowhere to be found when you actually have questions about the application of their product or have concerns when their product doesn’t live up to your expectations. Below, we have answered some of the most common questions we receive from NULASTIN® customers, and we hope that they will help answer your questions as well.

If you don’t see an answer to your question below, please view our website’s FAQ section

Do I have to keep using the products forever?

You should continue using the product as an ongoing part of your daily routine. If you discontinue use, your skin, lashes, brows, and hair will gradually revert back to their original appearance. 

The good news is that you can decrease usage after you’ve achieved your desired look. 

For LASH, BROW, and HAIR products — once you reach a point of satisfaction — you can apply the serum once per day. Another option is to decrease application to three or four times per week. We have found that you can take multi-day breaks from time to time without losing traction. When you want to increase the results again, go back to using twice per day.

Will the lash serum change the color of my eyes?

The LASH Follicle Fortifying Serum will not change the color of your eyes when used as directed. Our 5 synergistic ingredients (and two patented proteins) are designed to enhance your lashes and brows. The formula has been tested and the ophthalmic safety evaluation results did not demonstrate a potential for eliciting ocular irritation to the eyelid, or cornea.

How are NULASTIN® products different from other products on the market?

Only NULASTIN® products contain Elastaplex™ with real elastin, real keratin, and real science. Our bioavailable, small-batch serums are made in the USA and deliver real results. Unlike big cosmetic companies with products that may sit on shelves for months, our formula is always fresh, potent, and highly effective. We are free of top known allergens and preservatives and promise to never test on animals.

Our entire lineup is cruelty-free, paraben-free, gluten-free, vegan, clinically evaluated, and proven safe.

Will NULASTIN® cause irritation?

We pride ourselves on having a collection that is skin-safe, hypoallergenic, and made with the highest quality ingredients. Our LASH, BROW, HAIR, and SKIN products should not cause discomfort or irritation; however, if you tend to have a sensitivity to products, we recommend a patch test prior to use. This usually involves dabbing a small amount of product behind your ear or on your inner elbow and leaving it to dry for 48 hours. 

NULASTIN® is made fresh in small batches, and for that reason, it may initially be potent for certain individuals. For those with sensitive eyes, we advise using the serum in the morning (and not at night before bed), as the eyes seem to respond better. Nighttime is when the body repairs itself and this can cause your system to go into overdrive aggravating sensitivities.

If you experience any challenges with the product and depending on your desires, it may be possible to stop using the serum for a week or so until things calm down, and then reintroduce it using a very, very light application. A little goes a long way.

When will I see results?

NULASTIN® founder and CEO, Leah Garcia, received the first unsolicited compliment on her glowing skin after a few short weeks of using NULASTIN®. Not everyone will respond the same way — results vary from individual to individual depending on gender, age, genetic predisposition, and countless environmental factors. 

The LASH Follicle Fortifying Serum can generate changes within weeks. Lashes may feel more luxurious and hold mascara better. Within a month, overall changes may be noticeable, including length, width, and density. If the majority of your lashes and brows were in the third stage (see below for an explanation of the different stages of growth), you may need to use the serums longer to see changes. 

The BROW Shape Altering Serum and HAIR Vibrant Scalp Treatment may take more time. Stay the course! As for the BROW serum — keep on keeping on! Consistency over time is the brow game. The best practice is to apply the product in the areas where hair is sparse two times per day (morning and night). Certain spots can be problematic and may take months to look better.  If the follicle is damaged beyond repair, you may never see growth. This is true for every product on the market. Dead is dead. But if there is life in the follicle, we are confident we can help.

Timing is different for everyone. Your lashes, brows, and hair grow in stages. For lashes and brows, the cycle lasts 3-4 months.

The 1st stage (anagen): When your hair grows a little every day (30-45 days).

The 2nd stage (catagen): The transition or regression phase — when your hair follicles shrink, allowing the strands (bulb) to extend toward the surface (2-3 weeks).

The 3rd stage (telogen): The resting phase. Your hair bulb is inactive, and the hairs eventually fall out (Around 100 days).

The 4th stage (late telogen or exogen): Reassembly. This is where new follicles are formed. Think of it as the re-awakening process before the hair starts back into the growth phase. 

Can I use the NULASTIN® while wearing makeup?

All NULASTIN® products are designed for ease of use and can be applied under makeup with little or no wait time.

Is it safe to use the LASH & BROW serums if I have eyelash extensions, a lash lift, tinted eyelashes, eyeliner tattoo, or microblading?

Our LASH & BROW serums are highly recommended for individuals with eyelash extensions, lash lifts, and all of the above. There is no evidence that our serums will affect tinted lashes, eyeliner tattoos, or microblading.

What is your return policy?

Every NULASTIN® product is backed by a 100% Performance Guarantee. If our product(s) did not perform up to your expectations, you may exchange or return it at any time for a full refund — Terms and Conditions Apply


We also take pride in having a devoted customer service team that is here to help you every step of the way along your NULASTIN® journey. Whether you have a question about how to apply our patented, proven serums, would like to learn more about the science featured in our formulas, or are curious as to when you can expect to see results, our team is here to assist you. If you do not find the answer to your NULASTIN® question above or in our website’s FAQ section, please contact our customer service team at

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