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You'll have to find someone who can sell you a large quantity - under the table for that! But they're not sold in the public. Follea Topette Crown Extensions quickly transform your look by providing extra length and volume from the top down instead of the sides, without the risk of damage caused by bonded extensions. The Topette collection can be used with clip-in or sew-in extensions to match volume and length to create chic styles. Follea's newest Topette Crown Extensions, Aero-2 and Lifestyle-2 T-100, are now available in three base sizes, two longer layered hair lengths and have added density. Topette lengths range from 8" to 14". Prices range from $1,238 to $3,975.

ANOTHER BRAND is Hairtrade, the UK's leading retailer of hair extensions, hair care and beauty products has added an exciting new line to its hair styling range.

India has long provided “much of the world’s natural hair, sold to wholesalers mainly in China, which in turn marketed their products to retailers in Europe and the United States,” he writes. But Ms. Wilson found that Cambodians have similar hair quality, “long with cuticles in alignment,” he writes.

“Probably 99 percent of the world’s hair comes from India. Nobody had thought of Cambodia,” said Ms. Wilson, 39, straddling piles of hair on the floor.

I do not recommend them, specially if you've got thin or thinning hair, trying to grow hair or Afri-Amer. They will only make your hair thinner or hair falls.

May 22, 2011: Model and businesswoman Katie Price, who was formerly topless model Jordan, is demanding compensation from a top Los Angeles hair salon after she spent $17,000 on hair colourings and extensions that she claims were botched, leaving her hair so damaged it began falling out.

"Hair extensions can cause some damage to your real hair," says Placid Braganza, a design artiste. "Since they are attached using thermal heat, knotting, braiding or gluing, they can hamper hair roots or even break, split or burn hair strands if not done carefully," he adds.

Published 8-10-12: Even supermodels have bad hair days, but from the looks of this recent photo, Naomi Campbell appears to be dealing with something far worse.

A photo of the 42-year-old beauty vacationing in Ibiza earlier this week shows what appears to be a receding hairline.

Florida hair surgeon Dr. Alan Bauman, who has not treated Campbell, said the former supermodel appears to be suffering from traction alopecia — hair loss due to extensions.

“Extensions, weaves, anything artificial hanging on hair — no matter whether you attach it with glue, special magnets, tape — it’s going to cause damage over time,” Bauman told ABCNews.com. “And unless you give your hair a break from those extensions, it won’t rebound.”

READ: Health Hazards of Hair Extensions - ABC news. http://abcnews.go.com/Health/WomensHealth/health-h...

Traction alopecia is hair loss that occurs as a result of continuous pulling of the hair. Pulling may occur from hairstyles such as tight cornrows, plaits or braids with or without extensions, weaves, ponytails or even hair rollers or curlers. Natural hairstyles can also lead to traction alopecia as well. Long heavy locks and tightly coiled twists can lead to traction alopecia. The hair loss associated with traction alopecia typically occurs at the frontal hairline, at the temples or the area of the scalp above the ears. It may also occur at the posterior hairline. Google: Hair extensions causing young women to lose hair June 6, 2013.

Randee Bank also had problems after using hair extensions. "I still have bald spots. The hair has not grown back," said Bank.

Watch: Good Hair a documentary by Chris Rock 2009 on BET or HBO. According to Tyra Banks, 80% of the black population are part of the trillion dollar hair industry. Clips on youtube videos, also.

Google: Worst Celebrity Wigs & Weaves.