How Long Does a Sew In Last? The Professional Maintenance Guide

Quick Summary

The ideal duration for a sew-in weave is 6 to 8 weeks.

Although high-quality human hair bundles can last over a year with proper care, the installation itself should not exceed 2 months. Leaving a sew-in in for longer than 8 weeks increases the risk of traction alopecia, severe matting at the roots and scalp issue

Introduction: Why Time Matters for Protective Hairstyles

Starhair Factory has supplied millions of bundles to stylists and customers across the US from warehouses in Atlanta, Los Angeles and New Orleans. We know that a sew-in is one of the best protective hairstyles available, but only if you adhere to the recommended timeline.

Hair experts often receive questions: "How long does a sew-in last before it damages my hair?"

Many clients try to 'stretch' their installation to three or four months to save money. The answer is a professional no. Read on for a detailed breakdown of why the timeline exists and how to master sew-in weave maintenance.

1. The science: Why 6–8 weeks?

The 6–8 week limit is not arbitrary; it is based on the biological cycles of hair growth and the principles of sew in care for natural hair.

Hair Growth Rate: On average, human hair grows ½ inch (1.25 cm) per month.

The 'Anchor' Problem: your sew-in is stitched onto cornrows.

• At Week 4: You have ½ inch of new growth. The braids loosen slightly.
• At Week 8: you have a full inch of new growth. The heavy wefts are now hanging 1 inch from your scalp. The weight of the hair is no longer supported by the tight braid, but pulls directly on your individual hair strands instead. This tension can cause breakage.
  

2. Signs It Is Time to Take Out Sew In

Don't wait for the calendar if your hair is telling you it's time. If you notice any of the following signs, remove the installation immediately:

• Excessive Itching: if scratching doesn't relieve the itch, this indicates trapped fungus or dry scalp build-up.
• The 'Corn Chip' Smell: a musty odour that lingers after washing indicates mildew. This happens when the braids underneath did not dry completely.
• Visible Matting: Lift a track. If you feel a hard lump of tangled hair at the root (not the thread), your new hair growth is locking with shed hair.
• Loose Tracks: If the weave slides back significantly when you pull your hair into a ponytail, there is too much tension on your hairline.

3. Sew In Weave Maintenance: Care by Texture

Different hair textures require different levels of care to last the full 8 weeks. Use this comparison table to plan your nighttime routine for sew in upkeep.

4. The Critical Step: How to Wash a Sew In

The #1 reason people remove sew-ins early is scalp irritation. A common challenge is washing the weave without drying out your natural hair or the bundles. Follow these steps:

• Use an applicator bottle: Dilute the shampoo with water. Apply it directly to the scalp through the nozzle to cleanse the braids without tangling the weave.
• Wash downward: Never pile the hair on top of your head. Wash in a downward motion to prevent matting.
• Dry the braids (mandatory): After washing, sit under a hooded dryer for 45–60 minutes.
  • Fact: Even if the human hair bundles feel dry, the braids underneath act like a sponge. Wet braids can lead to mildew and a 'sew-in smell'.

5. FAQ: Common Questions

• Q: Can I keep a sew-in for 3 months?
• A: No, as three months (12 weeks) allows for excessive new growth. This will result in severe matting at the roots, often requiring you to cut your natural hair to remove the tangles.
• Q: Will a sew-in help my hair grow?
• A: Yes, through 'retention'. It prevents you from styling or heat-damaging your natural hair daily. However, it does not speed up growth; it simply prevents the ends from breaking off.
• Q: What is the best hair for sew in weave?
• A: To achieve maximum longevity, invest in human hair bundles (specifically virgin or raw hair). Unlike synthetic blends, high-quality human hair has aligned cuticles, so you can wash, reuse and reinstall the hair multiple times.

Final Summary

To ensure your sew-in remains a protective style rather than a damaging one, follow these three core rules:

1. Timeline: Limit your wear to 6–8 weeks. No exceptions.
2. Hygiene: Master how to wash a sew in properly—ensure the braids underneath are 100% dry to prevent mildew.
3. Quality: Invest in premium human hair bundles that won't mat or shed.

StarHair Factory reputation is built on consistency and the feedback of the stylists who use our products daily.

"What I appreciate most about Starhair is the cuticle alignment. My clients can wear a sew-in for 8 weeks, take it down, wash the bundles, and they bounce right back for the next install. That longevity is what builds trust."

— Sarah Jenkins, Professional Stylist (Atlanta, GA)

"Having a factory with a warehouse in LA is a game changer. I don't have to guess if the hair is real human hair or wait weeks for shipping. It’s consistent, dense, and holds a curl."

— L. Rivera, Salon Owner (Los Angeles, CA)

StarHair Factory is committed to providing the education and quality materials necessary for a healthy hair journey.