L.o.c.k. it Waterproof Flat Brush Eyeliner

5.00 out of 5 based on 10 customer ratings
(11 customer reviews)


In Stock

NET WT. 0.028 oz. / 0.8 g

SKU: N/A Category:


Dual flat brush



Quick dry

About the Product

This eyeliner features a soft flat brush that allows creating precise and sharp lines in one sweep. Its waterproof formula dries quickly and offers densely-pigmented dark brown lines.


Water (Aqua/Eau/Agua), Acrylates Copolymer, Iron Oxides (CI 77491), Alcohol, Butylene Glycol, 1,2-Hexanediol, Black 2 (CI 77266), Propylene Glycol, Phenoxyethanol, Ceteth-20, Ammonium Acrylates Copolymer, Aminomethyl Propanediol, PEG-60 Hydrogenated Castor Oil, Disodium EDTA

How To Use

Suggested Usage

  • Shake well before use.
  • Apply with narrow part of the brush to create a thin and precise line or apply with flat side of the brush for thick and bold line.
  • Close the cap after use.

11 reviews for L.o.c.k. it Waterproof Flat Brush Eyeliner

  1. (verified owner):

    Easy to use. Very good quality

  2. :

    Awesome eyeliner:)

  3. :


  4. :

    It doesn’t irritate my eyes

  5. :

    Hey, This article posted at this website is really good.

  6. :

    Perfect lines!

  7. :

    It’s easy to draw the line. Only Using this flat brush, draw both thin and thick lines. It’s so INNOVATIVE.

  8. :

    I don’t usually write reviews, but I had to rave about this eyeliner because it’s amazing.
    This is my new favorite. I think the quality is even better than what i used to use, plus price is beautiful !

    It basically fits all of the requirements I’d want.
    It’s affordable, extremely black, easy to use, waterproof and stays on for a long time !

    due to covid-19 I have to wear a mask to cover all my face but need eyeliner that only i can wear now.

  9. :

    I actually love this eyeliner. It dries matte, comes off ultra black, and does not smudge. I would say that it’s one of my favorites next to the Benefit roller liner. It’s a product I would recommend for anyone with oily lids to use since it does not budge! The price is also considerably better to other brands such as KVD Beauty and Fenty.

  10. :

    I’m obsessed with this eyeliner. I have been using brush eyeliners since I was 13 and have used everything from in the pot liners like Revlon and Maybelline to pens from Clinique and Lancome, to more recent brands like Fenty and Glossier. None hold a candle to Lock – I was hesitant at first since this brand is not as well known but when I saw the “Get It Beauty” seal, I knew I had to try it. That seal is SO WELL DESERVED!!! How is this product not more well known?! The brush is soft and smooth. But the real winning quality in this pen is the formula – it lasts so long – does not flake after drying, easy to apply, does not easily rub off but washes away with foam cleanser. This eyeliner pen has become a staple in my makeup bag and is the first eyeliner I reach for every day. The icing on the cake is that the price is so cheap compared to other brands but the quality of the luxe brands like MAC and Bobbi Brown. Thank you LOCK!!!!!!

  11. :

    I love Korean beauty. This product is absolutely amazing and I would recommend it to anyone ❤️

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