Undetectable Technology Wefts®

CAST Undetectable Technology Wefts®

Create effortless length, volume and luxury fullness with CAST Undetectable Technology Wefts — designed with a slim, flat construction that sits comfortably against the scalp for a seamless and discreet finish.

Our advanced weft design allows for maximum fullness while remaining lightweight and flexible, making it ideal for professional sew-in, micro ring or hybrid weft methods. The flat construction helps the weft lie smoothly against the head, ensuring a natural blend that feels comfortable for everyday wear.

Crafted from premium quality human hair and double drawn from root to tip, CAST Undetectable Technology Wefts deliver thick, healthy ends and beautiful movement throughout the hair.

Each bundle contains 50g of hair, allowing stylists to customise the amount needed for each client depending on their natural density and desired result.

Average application guide

• 50g (1 pack) – Light volume or thickness
• 100g (2 packs) – Medium volume
• 150g (3 packs) – Average full head application
• 200g+ – Extra fullness or long transformations

Most full head applications typically require around 150g (3 packs) depending on the client’s hair density and the final look being achieved.

Why stylists love them

• Flat, discreet weft construction
• Lightweight and comfortable to wear
• Premium double drawn human hair
• Thick, healthy ends from root to tip
• Perfect for volume or full transformations
• Flexible application methods for professional stylists
• 50g per bundle for easy customisation

These wefts are designed for professional use and can be cut, styled and toned to perfectly match your client’s hair.

Trade customers:
If you hold a CAST trade account, your trade discount will automatically be deducted at checkout once you are logged in, giving you access to exclusive professional pricing.