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Formas duales

Formas duales

Forma

NAILSPIRACY Dual Forms for Upper Extensions are professional reusable upper forms for sculpting nail extensions with acrygel, polygel, and builder gel systems. Each form is selected by three key parameters: size, arch height, and C-curve, helping nail technicians create a secure fit and consistent extension structure for different natural nail types.

  • ✔ Size Options – Small, Large, X-Large
  • ✔ Arch Options – Low, medium, high arch
  • ✔ C-Curve Options – Medium or high C-curve
  • ✔ Secure Fit – Better control during sculpting
  • ✔ Pack of 120 – Professional salon set
Read more about Dual Forms for Upper Extensions
Professional Dual Forms for Upper Extensions

Dual forms, also called upper forms, are used to sculpt nail extensions from the top side of the nail. Product is placed inside the form, the form is positioned on the prepared nail, and the extension is cured into shape.

NAILSPIRACY Dual Forms are designed for professional services using acrygel, polygel, or builder gel. The correct form choice helps improve fit, reduce excess filing, and create a cleaner extension structure.

Three Parameters: Size, Arch, and C-Curve
  • Size: Small, Large, and X-Large options help fit different nail bed widths and extension lengths.
  • Arch: Low Arch, Medium Arch, and High Arch options help match the height and profile of the natural nail plate.
  • C-Curve: Medium C-Curve and High C-Curve options control the side-to-side curve of the extension.

These three parameters work together. Size controls width and length fit, arch controls the vertical profile, and C-curve controls how curved the extension looks from sidewall to sidewall.

How to Choose the Right Dual Form

Choose the form by checking the client’s natural nail width, nail plate height, sidewall curve, and desired extension length. The form should sit securely without squeezing the natural nail or leaving large gaps at the sidewalls.

  • Small size — for narrower nail beds or shorter extension work.
  • Large size — for standard to wider nail beds and medium extensions.
  • X-Large size — for wider nails or longer extension styles.
  • Low Arch — for flatter nail plates.
  • Medium Arch — for average natural nail height.
  • High Arch — for more curved or higher-profile nails.
  • Medium C-Curve — for a softer, more natural extension curve.
  • High C-Curve — for a stronger, deeper side-to-side curve.
Best Uses
  • Acrygel upper form extensions
  • Polygel nail extensions
  • Builder gel extensions
  • Short, medium, and long extension sculpting
  • Natural-looking or stronger C-curve structures
  • Salon services where speed and consistency matter
How to Use
  1. Select the correct size, arch height, and C-curve for the client’s natural nail.
  2. Apply acrygel, polygel, or builder gel inside the dual form and spread the product evenly.
  3. Place the form onto the prepared nail, aligning the cuticle area, sidewalls, and free edge.
  4. Press gently to secure the form without flooding the cuticle area.
  5. Cure fully according to your product system.
  6. Remove the form, refine the edges, and finish the extension as needed.

Proper fit matters. A form that is too narrow, too flat, too high, or the wrong C-curve can affect product placement, extension structure, and final shape.

Cleaning and Storage
  • Remove uncured product residue before it hardens inside the form.
  • Clean according to your salon protocol and the material compatibility of the form.
  • Keep forms dry before storage.
  • Store by size, arch, and C-curve to make client fitting faster.
  • Avoid bending, crushing, or exposing forms to direct heat.
Final Summary

NAILSPIRACY Dual Forms for Upper Extensions help nail technicians create structured nail extensions with acrygel, polygel, or builder gel. Each form is selected by size, arch height, and C-curve, giving more control over fit, structure, and final extension shape.

Pair with Nailspiracy Acrygel or Builder Gel for a complete upper form extension workflow.

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Frequently Asked Questions

What are Dual Forms for Upper Extensions used for?

Dual Forms for Upper Extensions are reusable upper forms used to create nail extensions with acrygel, polygel, or builder gel. Product is placed inside the form, the form is positioned on the prepared nail, and the extension is cured into shape. They are designed to help nail technicians create consistent structure, clean surface shape, and faster extension services.

How do I choose the right dual form size?

Choose the dual form size based on the client’s natural nail width and desired extension length. Small forms are best for narrower nail beds or shorter extensions, Large forms fit standard to wider nail beds, and X-Large forms are useful for wider nails or longer extension styles. The form should fit from sidewall to sidewall without squeezing the natural nail.

What is the difference between Low Arch, Medium Arch, and High Arch dual forms?

Arch refers to the vertical profile of the dual form. Low Arch forms are better for flatter natural nail plates, Medium Arch forms work for average nail height, and High Arch forms are useful for higher-profile or more curved nails. Choosing the correct arch helps the form sit securely and improves the final extension structure.

What does C-Curve mean in dual forms?

C-Curve describes the side-to-side curve of the nail extension. Medium C-Curve creates a softer and more natural-looking curve, while High C-Curve creates a deeper and stronger side-to-side curve. The right C-Curve helps improve fit, structure, and the final look of the extension.

What products can I use with Dual Forms?

Dual Forms can be used with acrygel, polygel, and builder gel systems for upper form nail extensions.