Here's a breakdown:
* 4 inches: This is the *minimum* length needed for the braids to hold the wefts securely. However, it might be more difficult to hide the tracks with shorter hair, and there's a higher chance of tension and breakage.
* 5-6 inches or longer: This length is ideal for a sew-in. It allows for more secure braiding, better blending with the extensions, and reduces the risk of tension and breakage.
Important Considerations:
* Hair Thickness: Thicker hair can sometimes get away with being slightly shorter because it provides more volume to cover the tracks.
* Hair Texture: Coarser or more textured hair might hold braids better than fine or silky hair.
* Weave Type: Different types of weaves (e.g., partial sew-in, full sew-in) might have slightly different length requirements.
* Professional Consultation: Always consult with a professional stylist. They can assess your hair's length, thickness, and health to determine if a sew-in is suitable for you and recommend the best type of install. They can also advise on proper care to prevent damage.
Trying to get a sew-in with hair that's too short can lead to:
* Tension and breakage: The braids can be too tight and pull on your natural hair.
* Visible tracks: The wefts might not be covered properly.
* Discomfort: The weave might feel uncomfortable or itchy.