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Lancôme

Lancôme Cils Booster XL Enhancing Lash & Mascara Primer - Eyelash Primer

  • Based on 6,506 reviews
Condition: New
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Availability: Only 3 left in stock, order soon!
Fulfilled by Amazon
Arrives Friday, Oct 9
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Size: 0.17 Ounce (Pack of 1)


Features

  • Lancome's number one lash-conditioning mascara primer. Gliding on smoothly and evenly, it creates a perfect base layer that maximizes the results of any mascara adding visible length, volume, and curl for a bold, clump-free, false-lash effect.
  • Infused with micro-fibers, Vitamin B5, and Vitamin E, this clump-free formula separates and coats each lash evenly. White in color, it amplifies mascara pigment intensity while conditioning lashes to feel luxuriously soft, never stiff or brittle.
  • Clinically validated performance: in a consumer test with 103 women, 93% saw more length, 92% saw more volume, and 85% saw more curl. Over time, this revitalizing primer visibly improves natural lash thickness and curl with continued use.
  • More than just a mascara primer Cils Booster XL doubles as a luxurious overnight lash mask. Apply to clean bare lashes before bed to nourish, condition, and deeply rejuvenate lashes while you sleep. Wake up to visibly softer, healthier lashes.
  • Apply from root to tip. Do not wait for it to dry before layering mascara. For best results, apply two coats to top and bottom lashes before your mascara. As a nighttime treatment, apply to clean lashes before bed and allow to dry before sleep.

Description

Enhancing Lash Primer Lash Idôle Monseiur Big Définicils Le 8 Hypnôse Hypnôse Drama What is Cils Booster XL Primer? Cils Booster XL is an innovative all-in-one lash conditioner and mascara primer. Infused with micro-fibers, Vitamin B5, and Vitamin E, it evenly separates and coats lashes for maximized volume, length, and curl. An Allure Best of Beauty award winner! How do I apply Cils Booster XL Primer for best results? For the best results, apply the primer from roots to tips of clean lashes. Do not wait for the white formula to dry — coat with mascara immediately, until primer is no longer visible. For bolder results, apply two coats to both top and bottom lashes. Why do I need a lash primer before mascara? A lash primer creates a smooth, even base that helps mascara adhere better, building more volume, length, and curl. It also nourishes and conditions lashes over time, making them appear fuller, thicker, and healthier for a dramatic false-lash effect. Why is the Cils Booster XL Primer formula white in color? The primer's white formula creates an ideal base allowing your mascara's pigment to appear more vibrant and dramatic. It forms an even surface layer for a more dramatic finish, while the vitamin-infused formula keeps lashes feeling soft, never stiff. Can Cils Booster XL Primer be used as a nighttime lash treatment? Yes! This creamy, conditioning formula doubles as an overnight lash mask. Apply to clean, bare lashes before bed and allow to dry completely. It nourishes and rejuvenates lashes while you sleep, leaving them feeling soft and luxurious by the morning.

Product Dimensions ‏ : ‎ 3.94 x 3.94 x 1.97 inches; 0.02 ounces


Item model number ‏ : ‎ 4336218858


Manufacturer ‏ : ‎ Lancôme


Best Sellers Rank: #2,145 in Beauty & Personal Care (See Top 100 in Beauty & Personal Care) #5 in Eyelash Primers


#5 in Eyelash Primers:


Customer Reviews: 4.6 4.6 out of 5 stars (6,506)


Product Benefits: Visibly boosts lash volume, length, and curl. Conditions lashes. Clump-free mascara base. Also a nightly lash mask.


Brand Name: Lancôme


Item Form: Gel


Number of Items: 1


Container Type: Tube


Country as Labeled: France


Package Type Name: Tube


Manufacturer: Lancôme


Item Highlight: Eyelash & Mascara Primer - Infused with Micro-fibers, Vitamin B5 and Vitamin E - Boosts Mascara Volume, Length & Curl


Global Trade Identification Number: 32


Item Weight: 0.5 g


Model Number: 4336218858


Skin Type: All


Manufacturer Part Number: 2


Other Special Features of the Product: Long-Wearing


Specialty: Curl Enhancing, Volumizing


Water Resistance Level: Not Water Resistant


Mascara Wand Type: Comb


Coverage: Full


Item Volume: 5.5 ml


Item Dimensions: 3.94 x 3.94 x 1.97 inches


Color: White


Material Type Free: Paraben Free


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Oct 9

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Totally recommended: A Lash-Lifting Miracle
Size: 0.17 Ounce (Pack of 1)
I've been using the Lancôme Cils Booster XL Enhancing Lash & Mascara Primer for quite some time now, and it's become an absolute must-have in my makeup routine. This primer has completely transformed the appearance of my lashes, giving them a longer, thicker, and more voluminous look. The key to using this product effectively is to apply mascara immediately after applying the primer. This ensures that the mascara adheres to the primer, creating a more dramatic effect. I've paired this primer with various mascaras, and it complements them all beautifully. It seems to intensify the color and volume of any mascara I use, resulting in a truly stunning lash look. One of the things I love most about this primer is how natural it looks. It doesn't clump or flake, and it doesn't feel heavy on my lashes. My lashes appear longer and thicker, but not in a fake or unnatural way. It's a subtle enhancement that makes a big difference. Removing this primer is a breeze. It washes off easily with micellar water, leaving no white residue behind. I've never had any irritation or sensitivity issues with this product, even though I have sensitive eyes. I believe it's absolutely worth the investment. The results are truly remarkable, and it lasts for a long time. If you're looking to take your lashes to the next level, I highly recommend giving this primer a try. ... show more
Reviewed in the United States on September 8, 2024 by Aurora
    • Eyelash primer
Size: 0.17 Ounce (Pack of 1)
My absolute favorite addition to eye makeup! I no longer use an eyelash curler! Easy to use, and expensive, last a while, and makes my lashes look longer and fuller!.
Reviewed in the United States on July 23, 2026 by Jean Barbetta
    • Absolutely love it
Size: 0.13 Fl Oz (Pack of 1)
I love this product. It really helps my eyelashes pop and stay in place it enhances your mascara. I give it a 10.
Reviewed in the United States on August 26, 2026 by Glenda Kravetsky
    • Lash Explosion, Worth Your Money 100X Yes!!
Size: 0.17 Ounce (Pack of 1)
Absolutely love this mascara primer! The application is easy and smooth. No clumps, just healthier, longer, fuller lashes, that look amazing with little work!! I love that the primer color is white. This makes it soo... easy to see that the primer is actually on all of my lashes and then easy to see when I have covered the primer well with my mascara. One important tip to know, is that you must place your mascara on immediately after you stroke on your primer... you do NOT wait till it dries! I have used this for a long time and been extremely happy with the results. It is on the expensive side, but I feel it is definitely worth the money!!! Absolutely!! ... show more
Reviewed in the United States on December 12, 2025 by Ritchhart
    • Not the holy grail BUT very good still :)
Size: 0.13 Fl Oz (Pack of 1)
Review Image by Lindsay
It’s good! I’m still on the hunt for the *perfect* primer, but this works quite well for me in the meantime :) The product is quite thin for a primer, which is good imo, because primers tend to dry out on me so fast 🙄 I’m hopeful that this one will last longer! It’s also good because it won’t clump so much. This one doesn’t clump at ALL 🙌🏽 That said, this isn’t the most volumizing primer I’ve ever used. It’s definitely lengthening, but not so much volumizing. I tested it out today, as you can see in the photo. I first tried only one coat on the left eye shown. I wasn’t very impressed with that one. So i took everything off my left eye and redid it with 3 coats of the primer. And that time i got much closer to the results i was looking for :) And for anyone wondering, the best volumizing primer I’ve found thus far is the urban decay subversion primer (i also use their mascara—perversion—which is what I’m wearing in the photo). I used that one for a long, long time! But, as i mentioned before, it dries out so fast (and at that price point? Ugh 😭), AND it tends to clump your lashes together so you have to be really careful about separating them (i used a mechanical pencil lmao). I haven’t decided whether to get that one again. Just trying this one out for a while! That’s why i got the travel size :) ... show more
Reviewed in the United States on June 18, 2026 by Lindsay
    • Works best for me!
Size: 0.13 Fl Oz (Pack of 1)
I am a long-time user of Lancome mascara, lash, and other eye makeup products. One of my favorite products is the Cils primer, and it far beats the offerings from other beauty brands I have tried. And what makes me a confirmed Lancome customer is the fact that they offer a small size in the Cils primer and mascaras. I have arthritis in my hands and I have trouble using the regular-length mascaras and primers. The shorter-length eye products are much easier for me to use. ... show more
Reviewed in the United States on August 25, 2026 by Diana A
    • Not clumpy and lengthening
Size: 0.17 Ounce (Pack of 1)
Excellent product. Easy to apply, made my lashes long and thick looking and I didn't need to apply too much mascara. Not clumpy at all
Reviewed in the United States on August 23, 2026 by Amazon Customer
    • Lash enhancement
Size: 0.17 Ounce (Pack of 1)
This Booster definitely enhances the lash mascara. Highly recommended.
Reviewed in the United States on September 20, 2026 by Kay Kimbrough

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