Firm Foundation strengthening base coat bottle, lavender tint – ella+mila nail care
Firm Foundation nail hardener treatment and base coat with its retail box, 0.45 fl oz
Firm Foundation nail hardener before and 8 weeks later, holding the bottle
Firm Foundation strengthening base coat bottle, close-up
Firm Foundation nail hardener before and after comparison on short brittle nails

Firm Foundation

4.9
Rated 4.9 out of 5 stars
171 Reviews
Regular price$ 10.50
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Shipping calculated at checkout.

Strengthening Base Coat

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This 2-in-1 nail strengthener & base coat provides both basecoat adhesion and strengthening treatment properties, which promote nail growth, stronger nails and longer lasting manicures. Making your nail polish last is simple. The key is clean, prepped nails and proper application. May be applied on its own or as a base coat with polish over it. 

How to Use

Application: Apply one coat of nail strengthener/base coat on clean and dry nails. May be used as strengthener only or doubled as basecoat. If using as strengthener only, use 2-3 times per week for two weeks. Remove and reapply original application.

Ingredients
Ethyl Acetatel, Butyl Acetate, Nitrocellulose, Adipic Acid / Neopentyl Glycol / Trimellitic Anhydride Copolymer, Acetyl Tributyl Citrate, Isopropyl Alcohol, n-Butyl Alcohol, Benzophenone-3, Dipropylene Glycol Dibenzoate, Helianthus Annuus (Sunflower) Seed Oil, Trimethylpentanediyl Dibenzoate, Allium Sativum (Garlic) Bulb Extract, Citric Acid, Violet 2

Which Base Coat Is Right for You?

Different nail needs, different bases — choose the one that preps your nails best.

All About the Base

Everyday Base Coat

For smooth, even polish application

Preps nails for polish with a clean, balanced base.

View Details

Cover Your Bases

Ridge-Filling Base Coat

For ridges and uneven-looking nails

Visually smooths the nail for a more even look.

View Details

Firm Foundation

Strengthening Base Coat

For weak or peeling nails

Adds support and helps nails feel stronger.

View Details

Helpful add-ons

Make touch-ups, re-dos, and fresh starts easier.

4.9
Rated 4.9 out of 5 stars
Based on 171 reviews
Total 5 star reviews: 155
Total 4 star reviews: 9
Total 3 star reviews: 7
Total 2 star reviews: 0
Total 1 star reviews: 0
84%would recommend this product
How often do you use your hands?Rated 1.5 on a scale of minus 2 to 2
171 reviews
  • K
    Kelly
    I recommend this product
    Rated 5 out of 5 stars
    1 month ago
    5 Stars

    The base to my nail routine, excellent product.

  • R
    robin
    I recommend this product
    Rated 5 out of 5 stars
    2 months ago
    5 Stars

    Love their products...and my nails have never looked better

  • MG
    Makiah G.
    Verified Buyer
    I recommend this product
    Age Range 25 - 34
    What is your nail type? Weak, Thin, Splitting, Breaking
    Rated 4 out of 5 stars
    3 months ago
    Does it make your nails stronger?

    I've been using this as a base coat for about 5 months now, was waiting to review until I really had given it a chance. Is it a great base coat? Absolutely. Does it make your nails strong? Meh.

    I seriously can't tell if it has really been helping my splitting nails. I think to be quite honest my hair, skin and nails supplement, vitamin d and chia seeds have been doing the heavy lifting in that department. My nails are getting better, but after FIVE months I would have expected a LOT more.

    Get it for a good base coat, supplement your diet if you actually want strong nails.

    How often do you use your hands?Rated 2.0 on a scale of minus 2 to 2
  • JM
    Jackalynn M.
    Verified Buyer
    I recommend this product
    Age Range 65+
    What is your nail type? Thin
    Rated 5 out of 5 stars
    3 months ago
    Fantasric

    I love this product, I use it often with no polish, it’s so shinny

    How often do you use your hands?Rated 2.0 on a scale of minus 2 to 2
  • BF
    Becka F.
    Verified Buyer
    I recommend this product
    Age Range 55 - 64
    What is your nail type? Peeling
    Rated 5 out of 5 stars
    4 months ago
    Love this!

    This product works great! I apply it as my base coat. Great stuff!

    How often do you use your hands?Rated 2.0 on a scale of minus 2 to 2

Easy steps to long-lasting nails

A simple routine for smoother application and longer wear

STEP 1

Prep + Clean

Clean, dry nails help polish apply smoothly and evenly.

Shop Nail Care

STEP 2

Base Coat (1 thin layer)

One thin layer helps polish adhere and look more even.

Shop Base Coat

STEP 3

Color (2–3 thin coats)

Apply 2–3 thin coats, letting each layer dry before the next.

Shop Nail Colors

STEP 4

Top Coat (seal + protect)

Finish with a top coat to seal and protect your manicure.

Shop Top Coat

As seen in

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Health
Life & Style
Nails Magazine
In Touch

Thoughtfully made for your nails

Made without the harsh chemicals commonly found in traditional polish

17-Free Formula

Made without the harsh chemicals commonly found in traditional polish

Gentle on nails

Helps minimize dryness and staining when used with a base coat

Cruelty-free & vegan

Never tested on animals

Salon-quality color at home

Smooth application, glossy finish

FAQs

Answers to common questions about choosing, applying, and using base coats.

A base coat helps prep the nail surface before color, creating a smoother canvas for polish and improving the overall look of your manicure.

If your nails are generally healthy, start with All About the Base.
If you notice ridges or uneven tone, Cover Your Bases is a better fit.
If your nails feel weak or peel easily, choose Firm Foundation.

Yes. Cover Your Bases can be worn alone for a more even-looking, natural finish. The other base coats are designed primarily to be worn under polish.

Apply one thin layer to clean, dry nails before your color. Allow it to dry briefly before applying polish.

Yes. All ella+mila base coats are designed to work with ella+mila nail polishes and most standard nail polishes.

Absolutely. You can use different base coats depending on how your nails feel or look at the time—there’s no need to stick to just one.

Yes. All ella+mila base coats are 17-free, vegan, and cruelty-free.

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