Hair install cost per week.

Worked example

A $420 install worn for 7 weeks is $60 a week, or $260 a month (x 52 / 12). With 2 rest weeks the cycle is 9 weeks, so you fit 5.78 installs a year, $2,426.67 a year, and spread over the whole 9-week cycle that is $46.67 a week.

How it works

cost per week = cost / weeks worn. cost per month = cost per week x 52 / 12. Cycle length = weeks worn + rest weeks; installs per year = 52 / cycle; cost per year = cost x installs per year; cost per week over the cycle = cost / cycle length.

The page flags more than 8 weeks as beyond the usual range quoted in the guides and more than 12 weeks as longer than the limit reported below. How long a style can safely stay in depends on your hair, scalp and installer.

Sources and basis

Checked 2026-10-15. Sew-in 6 to 8 weeks: Curl Centric: How Much Is a Sew-In? Install and Hair Costs, Piece by Piece and Govihair: How Many Bundles For a Sew In Hair Extensions? (6 to 8 weeks). Curl Centric also says some people wear one up to 12 weeks, which it calls the outer limit, and reports the American Academy of Dermatology advising two or three months at most. A stylist interviewed by Textured Talk: How to Transition With Weave..The RIGHT Way recommends removal at 8 to 10 weeks. Tape-ins are designed to last 6 to 8 weeks before a refit: Cliphair: How Long Do Tape In Hair Extensions Last?. A lace front held with long-term adhesive can stay secure up to six weeks: Curl Centric: How Long Do Lace Front Wigs Last? Synthetic vs Human Hair Wigs. Calculation: arithmetic on the figures you enter.

Not medical or professional advice. If a style is pulling, painful or causing hair loss, take it down and see a professional.

FAQ

How long should a sew-in stay in?

Curl Centric and Govihair say 6 to 8 weeks. Curl Centric calls 12 weeks the outer limit and reports the American Academy of Dermatology advising two or three months at most. A stylist interviewed by Textured Talk recommends removal at 8 to 10 weeks.

How do I work out the cost per week of an install?

Divide the all-in cost (hair, installer, products and tip) by the number of weeks you wear it.

Does the rest period change the cost?

Rest weeks do not change the cost of one install, but they spread the cost over a longer cycle and cut the number of installs you pay for in a year.

How long do tape-in extensions last before a refit?

Cliphair says tape-ins are designed to last 6 to 8 weeks before a refit, and some quality hair can be reused after that.

How long does a lace wig stay on?

Curl Centric says a lace front held with a long-term adhesive such as glue or tape can stay secure up to six weeks, while a glueless wig comes off daily.