Gel Nail Polish

Cobalt

4.9
Rated 4.9 out of 5 stars
64 Reviews
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Lasts 2+ weeks without chipping
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If you're looking for a true primary blue this striking hue is for you. Salon-quality gel nail polish, done at home.

Colour Bold cobalt blue
Finish Glossy
Opacity Jelly
  1. Prep & dehydrate your nails.
    Optionally, apply pH Bond & Nail Primer.
  2. Apply Base Coat & cure under the Gel Nail Lamp.
    Optionally, apply Builder Gel.
  3. Apply 1-3 coats of Colour Coat & cure each coat under the Gel Nail Lamp.
  4. Apply Top Coat & cure under the Gel Nail Lamp.
  5. Apply Cuticle Oil.

For more detailed guidance, visit our How It Works page or browse Gelous nail tutorials on YouTube.

  • Bottle Size: 10mL.
  • Coverage: Buildable jelly.
  • Ingredients: Di-HEMA Trimethylhexyl Dicarbamate, Hydroxyethyl Methacrylate, Bis-Trimethylbenzoyl Phenylphosphine Oxide, Hydroxycyclohexyl Phenyl Ketone, Ferric Oxide Hydrate, May Contain: Colour Pigments.
  • Colour Accuracy: Colours may appear differently on screen than in person due to differences in display settings, lighting, and skin tone.
  • Compatibility: Designed to cure with the Gelous Gel Nail Lamp and formulated to work seamlessly with all other Gelous Gel Nail Polish products.
  • Skin Contact: Avoid Gel Nail Polish touching your skin—wipe off immediately if this occurs.
  • UV Protection: Wearing Anti-UV Gloves or applying SPF 15–30 minutes before curing is a simple habit many customers use.
  • Use Gel Nail Polish away from sun and your Gel Nail Lamp when turned on.
  • Wipe bottle rims after use and close lids tightly.
  • Store upright in a cool, dark area with a steady temperature (avoid bathrooms). 
  • Ships within 1–2 business days. Usually delivered in 2–6 business days.
  • Free shipping on orders over $100.
  • Express shipping available—usually delivered in 1–3 business days.
  • For full details visit our Shipping Policy and Returns Policy.

Gel Manicure Results That Last

From smooth prep to chip-free colour and healthy growth—see how long-lasting Gelous gel nails really look.

1

Prep

Smooth, clean nails ready for long-lasting gel adhesion.

2

Paint

Rich, even colour with a glossy, salon-quality finish.

3

Growth

Healthy, chip-free wear that lasts beautifully over time.

Customers say this blue polish has a stunning, vibrant appearance. Many reviews mention its buildable formula, typically needing two coats. The colour offers a unique jelly-like finish that creates depth. Some note it appears darker than pictured.
4.9
Rated 4.9 out of 5 stars
Based on 64 reviews
97%would recommend this product
Total 5 star reviews: 58 Total 4 star reviews: 4 Total 3 star reviews: 1 Total 2 star reviews: 1 Total 1 star reviews: 0
64 reviews
  • EP
    Erin P.
    Verified Buyer
    Level of daily wear on your hands (e.g. washing them a lot, gardening, working with your hands) Regular Wear
    Skin Tone Neutral (peachy with green/blue veins)
    Skin Colour Light
    1 month ago
    Level of daily wear on your hands (e.g. washing them a lot, gardening, working with your hands) Regular Wear
    Skin Tone Neutral (peachy with green/blue veins)
    Skin Colour Light
    Rated 5 out of 5 stars
    Deep Cobalt

    Such an amazing colour. By the third coat it's a beautiful deep cobalt blue. Got so many compliments.

    Colour AccuracyRated 5.0 on a scale of 1 to 5
  • MW
    Martina W.
    Verified Buyer
    Level of daily wear on your hands (e.g. washing them a lot, gardening, working with your hands) Regular Wear
    Skin Tone Neutral (peachy with green/blue veins)
    Skin Colour Brown
    1 month ago
    Level of daily wear on your hands (e.g. washing them a lot, gardening, working with your hands) Regular Wear
    Skin Tone Neutral (peachy with green/blue veins)
    Skin Colour Brown
    Rated 5 out of 5 stars
    Stunning

    Vibrant and striking cobalt blue colour

    Colour AccuracyRated 5.0 on a scale of 1 to 5
  • EH
    Elena H.
    Verified Buyer
    Level of daily wear on your hands (e.g. washing them a lot, gardening, working with your hands) Regular Wear
    Skin Tone Neutral (peachy with green/blue veins)
    Skin Colour Medium
    2 months ago
    Level of daily wear on your hands (e.g. washing them a lot, gardening, working with your hands) Regular Wear
    Skin Tone Neutral (peachy with green/blue veins)
    Skin Colour Medium
    Rated 5 out of 5 stars
    love

    love!

    Colour AccuracyRated 5.0 on a scale of 1 to 5
  • CF
    Carla F. E.
    Verified Buyer
    Level of daily wear on your hands (e.g. washing them a lot, gardening, working with your hands) Regular Wear
    Skin Tone Neutral (peachy with green/blue veins)
    Skin Colour Tan/Olive
    2 months ago
    Level of daily wear on your hands (e.g. washing them a lot, gardening, working with your hands) Regular Wear
    Skin Tone Neutral (peachy with green/blue veins)
    Skin Colour Tan/Olive
    Rated 5 out of 5 stars
    Amazing color

    Loved the vibrancy and pigmentation of this color. Very bright so if you don’t like strong colors it is not for you

    Colour AccuracyRated 5.0 on a scale of 1 to 5
  • IM
    Isla M.
    Verified Buyer
    Level of daily wear on your hands (e.g. washing them a lot, gardening, working with your hands) Hard Wear
    Skin Tone Warm (yellowy with olive/green veins)
    Skin Colour Tan/Olive
    2 months ago
    Level of daily wear on your hands (e.g. washing them a lot, gardening, working with your hands) Hard Wear
    Skin Tone Warm (yellowy with olive/green veins)
    Skin Colour Tan/Olive
    Rated 4 out of 5 stars
    Cobalt

    Very deep blue. Possibly good to add a white underneath to see the jelly like blue colour

    Colour AccuracyRated 4.0 on a scale of 1 to 5

Why Gelous?

Salon-quality gel nails that last 2+ weeks
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Save thousands on salon visits every year
Vegan, cruelty-free & 10-free formulas
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