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It's All About The Base
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It's All About The Base
From Foundation Flex to Structure Gel to Brush-On Builder, there are so many choices when it comes to choosing a base gel. We give you the rundown on each so you can select the best for your nail needs.
BY GELISH
05.21.25

One of the most important steps in any gel service is selecting the proper base gel for your specific nail type. That's because base gel isn't just about adhesion; it plays a crucial role in the integrity, longevity, and overall health of the enhancement. Knowing the condition of your natural nail will allow you to tailor your application for better retention and fewer issues like lifting, chipping, or over-flexing.

No nail service is a one-size-fits-all experience, and that's why Gelish has a variety of base gels to choose from. Each one is formulated a little differently in order to customize the Gelish experience for every type of client. Whether you have weak or damaged nails, are looking to grow out your talons, or even have perfectly healthy tips, we've got a solution for you. Here, we break down each of our base gels to help you select the right one for your nail needs.

Foundation

Foundation

The original and classic Foundation Gel is the go-to base gel for Gelish Soak-Off Gel Polish and Gelish Structure. Like double-sided tape, it creates an adhesive bond between the nail and the gel, ensuring long wear without damaging the natural nail plate.
Best for: Normal or Healthy Nails

Foundation Flex

Foundation Flex

This Rubber Base works like a second skin for nails, offering an elasticity that allows it to move with the natural nail, reducing the chance of cracking or lifting. Plus, it produces almost a plumping effect, creating instant volume with a barely-there feel. Use the Clear as a flexible protective base under your favorite Gelish Soak-Off Gel Polish, or wear the Light Pink, Light Nude, or Cover Beige alone for a natural-looking nude manicure.
Best for: Thin, Peeling, or Very Flexible Nails

Brush-On Structure

Brush-On Structure

Clients with compromised nail plates need extra care. This medium-viscosity base gel allows you to reinforce strength, build, shape, and even repair a damaged nail plate. Thanks to its versatility, you can use the Clear as a base for a color Gelish service or opt for Translucent Pink or Cover Pink alone for a nude manicure, or even as the base for a quick French.
Best for: Weak or Damaged Nails

Brush-On Builder

Brush-On Builder

This is a thick-viscosity builder gel in a bottle, boasting a specially designed brush length for maximum product control. The formula is self-leveling and is designed to provide strength and support without compromising flexibility. While it's not exactly a base gel, it does work as reinforcement for those who want their Gelish Soak-Off Gel Polish to last longer. It can also be worn alone as an overlay or to extend the natural nail by sculpting or with a tip. Plus, Brush-On Builder is also available in a variety of colors: Ivory Nude, Mauve Nude, Light Pink Nude, Pink Sand Nude, Beige Nude, and Blush Rose Nude.
Best for: Normal/Healthy Nails, Those Looking to Grow Natural Nails, or Wear Extensions

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