1.0
verified purchase
Bad
Absolutely terrible product, lash will not hold a curl mascara runs and doesn’t enhance anything aside from feelings of wasted money.
9/19/2025
What it is:A lash-conditioning mascara primer that conditions and primes lashes to maximize resultscreating even longer and more volumized lashes.What it does:Give your lashes an XL boost. With just one sweep, this innovative mascara primer glides on to evenly coat and smooth your lashes, maximizing the results of your favorite mascara. The magic behind this mascara base is the conditioning formulainfused with micro-fibers and vitamin Ewhich adds the look of extra length and thickness to lashes for added visible performance. White in color, it allows the black pigments to stand out from the clean base with more intensity than with traditional mascaras.What else you need to know: CILS BOOSTER XL lengthens and thickens the look of lashes to maximize the results of any mascara. Use CILS BOOSTER XL as a “lash mask” at night on clean lashes to nourish and rejuvenate.Beauty Tip:Apply the luxurious Rénergie Lift Multi-Action Eye Cream (sold separately) before using CILS BOOSTER XL for a youthful, radiant, wide-eyed look.
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Within 30 days of delivery
What it is:A lash-conditioning mascara primer that conditions and primes lashes to maximize resultscreating even longer and more volumized lashes.What it does:Give your lashes an XL boost. With just one sweep, this innovative mascara primer glides on to evenly coat and smooth your lashes, maximizing the results of your favorite mascara. The magic behind this mascara base is the conditioning formulainfused with micro-fibers and vitamin Ewhich adds the look of extra length and thickness to lashes for added visible performance. White in color, it allows the black pigments to stand out from the clean base with more intensity than with traditional mascaras.What else you need to know: CILS BOOSTER XL lengthens and thickens the look of lashes to maximize the results of any mascara. Use CILS BOOSTER XL as a “lash mask” at night on clean lashes to nourish and rejuvenate.Beauty Tip:Apply the luxurious Rénergie Lift Multi-Action Eye Cream (sold separately) before using CILS BOOSTER XL for a youthful, radiant, wide-eyed look.
- SKU
- 2-P422457
- Brand
- Lancôme
- Category
- beauty / makeup
- Variants
- 1
Customer reviews
5.0
verified purchase
Must have
I’ve been using this for as long as it’s been around and it’s my go to. Tried and true. Formula is great and makes my lashes look unreal. A must have!
8/8/2025
5.0
verified purchase
This lash primer is perfect for prepping my lashes before applying mascara. It adds amazing length and volume, making my lashes look fuller and more defined. I’ve tried several primers before, but this one is by far the best I’ve ever used. It also helps my mascara last longer without clumping or smudging. Highly recommend
8/2/2025
2.0
verified purchase
I tried to make it work...pass
I have been trying to make this work since June...I have used it on every mascara tested which is now 26 DIFFERENT mascara from Sehora collections to Chantacallie and it always left white flakes, some it didn't even cover the white and is always leaving your eye lashes clumpy....use this money and buy hourglass or a tubing mascara
9/16/2026
5.0
verified purchase
My lashes don't hold a curl very well, but this primer seems to hold in place while adding so much volume. Really buildable and lasts all day. I would recommend applying mascara right after applying the primer for best results.
3/23/2026
1.0
verified purchase
Waste of money
I received it as a sample and it is horrid; I curl my lashes and once this is on, they all fall down. Also makes my lashes look too thick but not in a good way, like ‘spider leg’ lashes but FLAT 😬😬
3/21/2026
1.0
verified purchase
Don’t buy.
Either dried up or worthless. Mascara definitely better without this.
3/18/2026
5.0
verified purchase
the product i never knew i needed
i received this in exchange for my sephora points. i had never used a primer until i tried this one. i was missing out this makes your lashes look longer and increases volume. doesn’t bother my sensitive eyes. but the absolute best part about using this is how easy it is to remove my mascara at night. it wears beautifully all day and then at night my mascara comes off so easily.
3/12/2026
5.0
verified purchase
Amazing primer that goes perfectly with my Lancome mascara - you need this dream team in your makeup bag!
2/26/2026
5.0
verified purchase
I love the results!
This lash booster and base coat not only helps my mascara go on easier, but it also conditions my lashes. They are noticeably longer and healthier than before I started using it.
2/26/2026
