Builder gel, also known as construction gel, is one of the most popular options for achieving flawless nails with a strong, long-lasting structure. Whether you want to strengthen your natural nails, correct a shape or create nail extensions, this technique delivers a trendy, long-lasting result. In this guide, discover the different types of builder gel, what sets them apart from gel polish, and a step-by-step tutorial for perfect application and a stylish manicure.
What is builder gel?
Definition
Builder gel is a thick gel designed to strengthen, overlay or reshape the natural nail. It can lengthen the nail and correct its shape to perfect its appearance. Here, colour takes a back seat, although coloured builder gels do exist. The main aim is to work on the structure to create nail reinforcements, conceal imperfections and add volume and length.
Made of polymers, it must be cured under an LED or UV lamp to harden and achieve the exceptional strength that defines it.
Finally, it is highly versatile: it can be applied to natural nails, combined if needed with long extensions or used with a nail form.
Gel application takes place in 3 essential steps:
- The base phase: apply a base gel to ensure builder gel adheres to the nail.
- The building phase: shaping the gel according to the desired volume and shape.
- The finishing phase: apply a finishing gel that protects the lower layers and defines the final result, with a choice of matte, glossy or textured effects.
Builder gel can be applied to both natural nails and tips for long extensions.
(@pinterest, @ongle24)
The different types of gel
There is a wide variety of gels, more or less easy to work with. Among the most common are:
- Single-phase gel: a 3-in-1 gel that lets you complete all 3 application steps with a single product. A smoother, simpler application, ideal for beginners learning this technique.
- Two-phase gel: a 2-in-1 gel combines base and building, allowing you to choose your finish.
- Three-phase gel: this is the classic system with one product per phase. A technique mainly used by nail technicians because it is more complex, but it allows greater freedom when creating designs depending on the gel’s viscosity level.
- Self-levelling gel: it has the advantage of spreading evenly over the nail surface, making application much easier.
- Coloured builder gel: it creates a structured, colourful manicure in one step, without needing to add a layer of nail polish.
The benefits of builder gel
🛡️ Protection and reinforcement: builder gel is the ally of fragile nails that need strength and structure. Thicker than classic gel polish, it helps reinforce the nail and protect it from everyday breakage. Ideal if your nails are soft, fragile or prone to splitting. Protected this way, the nail becomes stronger and can grow steadily without breaking.
More information on nail overlays in our article.
💅 Perfect nails whenever you want: it smooths out imperfections and evens out the surface, creating an ideal base for applying colour or nail art. It also lets you shape any nail length or shape. Long stiletto nails or short square nails, anything goes.
⏱️ Long-lasting wear: up to 4 or even 6 weeks.
How do you apply builder gel?
Let’s be honest, builder gel requires excellent mastery of application techniques for smooth application and a perfect finish. While self-levelling gels do make things easier, especially for beginners, filing and sculpting remain complex technical steps, reserved for the most experienced hands. Here are the key steps for this type of manicure:
Nail preparation
As with any manicure, thorough nail preparation is essential to optimise gel adhesion and prevent premature lifting. Start by filing the nails with a 180-grit file to even them out and pushing back the cuticles. Then lightly buff the surface to create micro-scratches that promote good adhesion. Be gentle to avoid weakening the nail plate. Finally, clean and degrease the nail before applying the builder gel.
Application and curing
Depending on the system chosen (one-phase, two-phase or three-phase), apply the product or products in a thin layer, curing each one under a UV/LED lamp before applying the next layer. Choose a 48W LED lamp for fast gel curing.
During the building phase, shaping is done with a brush, playing with the gel's viscosity to sculpt the desired shape and length. For a short extension (less than 3 mm), choose a medium-viscosity gel. For a medium to long extension (4 to 8 mm), opt for a high viscosity to create a strong structure.
Your movements must remain precise and fluid: apply the gel to the centre of the nail, then stretch it towards the free edge without touching the cuticles. Gradually, create a slight curve (apex) in the centre to reinforce the structure. Above all, do not rush: you may create air bubbles or leave brush marks in the material, which would ruin all your efforts.
Finish
Unlike gel or acrylic nail application, you do not need to file to refine the finish. Except with single-phase gel, the application ends with a layer of top coat to create the desired effect and/or texture (matte, glossy, glittery, pearlescent, chrome...).
Builder gel application essentials by @nailsbypaular.
Builder gel vs semi-permanent nail polish
These two types of manicures are often confused. Yet each serves a very different purpose: builder gel acts as a skeleton for the nail, while semi-permanent nail polish acts as a covering. Here are the key points that set them apart:
Application
- With builder gel: application is technical and time-consuming (more than 1 hour), and is best done with a nail technician if you are inexperienced.
- With Green Flash™ gel polish: Green Flash™ Starter kits allow for a quick application (30 to 45 min) that is easy to do yourself at home.
The result
- With builder gel: an ultra-structured nail with a perfect curve, ready for beautiful extensions for those who love long claws and all your colour and nail art desires.
- With Green Flash™ gel polish: intense colour, mirror shine, endless nail art possibilities, but a length and shape that still depend on the natural nail.
Wear time
- With builder gel: the gel can last 4 weeks or more, depending on regrowth.
- With Green Flash™ gel polish: from 12 days with Green Flash™ polish to 21 days with a Top Coat Xtrem Flash™.
Removal
- With builder gel: except for soak-off gels, which are removed with a special solvent, filing (or buffing) is mandatory to remove builder gel. If done incorrectly, this filing can damage the keratin layers, thin the nail and leave it sensitised for a long time.
- With Green Flash™ semi-permanent nail polish: the polish can be peeled off in just a few minutes, without acetone or filing.
With Xtrem Flash™, discover the benefits of a long-lasting manicure with no risk during removal.
Builder gel is therefore the ideal option if you want to structure your nails, give them a new length and unbeatable strength. But to do so, you will need to learn the application technique for this unique manicure or visit a salon. For a long-lasting manicure that protects and strengthens your nails under colour, with easy application and safe removal, choose Green Flash™, a vegan, bio-sourced gel polish formula made with up to 84% bio-sourced ingredients. Strong nails, a perfect long-lasting manicure, and complete confidence are yours!
