
Foundation Flex infuses nails with supernatural flexibility, making breaks and snaps a thing of the past as the unique rubberized gel system virtually cocoons nails.
A patent has been given to Gelish because of its new product, Foundation Flex, for its Rubber Base Technology which helps add flexibility and the chance of snaps or breakage, a thing of the past. This product works as a protective skin for your nails and a base coat for your gelish; it can be used for perfect volume to uneven nails or simply as a filling base coat under gel polish. In this article, you will find all you need to know about Foundation Flex, from the product description and tutorial to my personal opinion.
Product Features
Foundation Flex is vegan, harsh-free in the USA, with Vitamin A and Biotin. It belongs to the Foundation product group with the unique pliability of Rubber Base Technology. It is cured with flexibility due to its rubber base. This product was created with developed foundation base adherence. The bio-sourced light-activated bonder gives nails extraordinary flexibility and suppleness.
Foundation Flex Shades
Gelish has produced this new formula in gorgeous, natural-looking shades.




Color Name
- Clear: It is luminous, crystal clear, and perfect to use as a base layer for girls with natural nail cracks and flaws.
- Light Pink: This color refreshes pale nails with a touch of pink.
- Light Nude: This color is a soft neutral that naturally hides and blends nail flaws.
- Cover Beige: This color helps cover imperfections with the ideal semi-opaque shade.
Color Swatches




Foundation Flex Directions
Foundation Flex is very easy to apply and remove. Anyone can do it by themselves with the following instructions. Click here to learn how to use this product step by step. Watch the Tutorial Video below for instructions on simplifying the application process.
Foundation Flex Application
- Your nails should be properly prepped and clean.
- Add a thin layer of Gelish Foundation Flex and cure for 30 seconds under LED or 2 minutes under UV Light.
- Apply a second layer and cure for 30 seconds under LED or 2 minutes under UV Light.
- Apply a thin layer of Top It Off and cure for 30 seconds under LED or 2 minutes under UV Light.
- Apply 2 thin coats of Lacquer and Need For Speed Top Coat or skip step 3 and apply 2 thin coats of Gel polish Top It Off and cure.
- Cleanse afterward if needed.
Removal Process
It should be soaked off in 10-12 minutes. Moisturize the top of the surface with a 100/180 Grit Buffer. Apply Gelish Artificial Nail Remover to a cotton ball and place it on the nail. Cove the pin with foil for 10-12 minutes. Then remove the loose product with an orangewood stick.
Foundation Flex Steps
Applied within 4 easy steps.

After completing your nail prep, apply a thin coat of Foundation Flex. Cure for 30 seconds in the 18G LED light.

Apply a second thin coat. Cure for seconds. Touch LED, the new portable and rechargeable lamp, works perfectly with this product.

Apply a thin coat of Top It Off Sealer gel. Cure for 30 seconds. Cleanse with Nail Surface Cleanse and Wipe It OFF lint-free wipes. Massage Nourish Cuticle Oil in the skin surrounding the nail plate.
Finishing Options


Skip step 3. Apply 2 thin coats of gel polish, curing between each coat. Finish with Top It Off, cure, and cleanse. Massage Nourish Cuticle Oil in the skin surrounding the nail plate.

After step 3, apply 2 thin coats of lacquer, followed by the Need For Speed Top Coat.
FAQ
Nail foundation acts as a base coat or primer with additional benefits and features; It adds a hint of natural nail color, designed to enhance the face of your nail, whether worn on its own or underneath another gel nail polish.
Nail foundation, in general, gives extra gloss and glamor and covers flaws and imperfections of nails. Gelish Foundation Flex has extra benefits like flexible protection, and you can barely feel it sitting on your nails.
The soak-off gel polish foundation will last until you remove it yourself. It doesn’t peel, chip, or fade. It will provide up to 21 days of lasting color.
No, this system uses only a PH balancing agent to accommodate the required moisture level of the nail. Then the Gelish Foundation Gel has viscous properties that attract the keratin in the natural nail, acting as a two-sided tape to adhere the Gelish Soak-Off Gel Polish to the nail itself.
To ensure that your brush will last longer, you should clean it every time it has been used.
Put the brush into PolyGel Brand Synthetic Brush. Wipe off overdid liquid from the bristles. For better application, put the brush with PolyGel Brand Slip Solution. Wipe the bristles dry with a lint-free nail wipe.
Yes, there’s a light smell of rubber mixed with the regular gel polish smell.
One of Gelish’s best-selling lamps is the Touch LED; it’s flexible and can finish a full set of nails in less than 20 minutes.
15 Comments
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says:
Gelish Foundation Flex functions as your second skin for nails adding light volume which works as protection that you can barely feel. This product literally replaces any base coat out there. Good job Gelish.
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says:
Foundation Flex is similar to the structure gel; the only difference is that the soak-off formula feels like rubber after curing. The good news is we can use this product as a foundation for any gel polish and nail lacquer, even if it’s not made by Gelish.
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says:
Yes 100% right, to add a little more, it’s practical for anyone looking to strengthen their natural nails. The Rubber Base Technology that has earned it a patent seems like it would be especially helpful in preventing breaks and snaps, and the fact that it can be used with both gel polish and regular nail polish makes it even more versatile.
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says:
Foundation Flex is the best long-lasting topcoat I’ve ever used. Since I got it, none of my gel polish has lifted or chipped.
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says:
Foundation Flex really wasn’t for me, but for my daughter, who’s a nail polish girl. It’s the second time she ordered it, so it means she is happy with its results.
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says:
Listen up, fellow nail techs! If you’re not already using Gelish Foundation Flex in your salon, you need to get on board ASAP. This liquid base is like the glue that holds your gel manicures together. It creates a flexible basis for your gel polish and helps to prevent chipping and peeling. Trust me, your clients will thank you for using this stuff. It’s like the difference between a house built on a solid base and one built on quicksand.
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says:
Thank you for the recommendation, it’s also great to see that Foundation Flex is vegan and free of harsh chemicals in the US, and that it includes ingredients like Vitamin A and Biotin to nourish the nails. I’ll definitely have to consider giving this a try!
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says:
I’m always breaking my nails left and right, so the idea of a rubberized gel system that virtually cocoons them – all this time I’ve been trying to strengthen my nails with superglue and duct tape. Little did I know, all I needed was a vegan, harsh-free, vitamin-packed base coat! Gelish, you are a genius. I’ll never go back to my makeshift methods again.
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says:
It’s a liquid and powder system used to create a flexible foundation for Gelish gel polish and it is not specifically marketed as being safe for people with latex allergies and it is not clear if it contains any ingredients that would cause a reaction in someone with a latex allergy. If you have a latex allergy, I think it would be best to consult with a dermatologist or a licensed professional before using this product.
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says:
Can Gelish Foundation Flex be used as a foundation under Gelish Polygel?
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says:
My client’s nails start to curl in as it grows. We’ve used structure gel, hard gel, dip powder, and just gel polish, but we’re still having the issue of it lifting when it starts to curl. Does this bend to their nails or will it just lift?
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says:
It’s important to assess the client’s nail health and determine if the curling is a result of any underlying medical conditions or simply a natural nail shape. If there are no medical concerns, you may want to try different nail techniques and products to find the best solution for your client.
It’s also important to communicate with your client about the issue and discuss their expectations and preferences for nail care. You may need to adjust your application technique or suggest a different maintenance routine to help prevent lifting and promote healthier nail growth.
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says:
No, Gelish Foundation Flex is not designed to be refilled. It is a soak-off gel base coat that provides flexibility and strength to the natural nails. Gelish Foundation Flex is typically applied as a base layer before applying gel polish.
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