add volume to hair permanetly?

[hermineh]

usually i use conditioner and also keratin treatment for making hair soft ,how could a professional do reverse? is there product without add color or highlight? i'm hairdresser and i need the professional answer very quick!!

[Sur La Mer]

Keratin treatment contains formaldehyde causing cancer. BRAZILIAN BLOWOUT HAD BEEN BANNED by the Food & Drug Adm. Sept. 12, 2011.

Google: keratin treatment warnings. About 2,620,000 results (0.36 seconds) 6-24-12.
 1-23-12. and Google: Lawsuits Brazilian Blowouts. About 1,010,000 results (0.24 seconds) 
In Sept. the federal government put out a hazard alert about the hair-smoothing treatment, Brazilian Blowout etc. warning that it contains liquid formaldehyde that can turn into formaldehyde gas when heated during a treatment. Now, the company's bottles of solution carry a warning label to alert stylists to the potential formaldehyde risk and the need to perform the treatment in a well-ventilated area. The manufacturer said Monday (3-6-12) that it had agreed to settle a class-action lawsuit for about $4.5 million.

Hair-straightening products are allowed to contain small concentrations of formaldehyde (0.2 percent). But several hair-straightening solutions have been found to contain well above the allowable limit. For example, one popular hair-straightening product that advertised itself as “formaldehyde-free” actually contained 6.8 percent to 11.8 percent formaldehyde.
Another example: Fourteen women, including two from North Texas and one from Houston, are suing Unilever, the maker of a product they claim caused permanent damage to their hair.
"It transforms frizzy, unmanageable hair into hair that's sleeker and easier to style," said the commercial for the Suave Professionals Keratin Infusion 30-Day Smoothing Kit, which is no longer being sold
When she began looking online for more information about the product, she said she found some people who said it worked, but more who said it damaged their hair.
She discovered a Facebook page devoted to angry consumers, and there are multiple postings on YouTube. I've been warning people about relaxers since 2009 and people are giving me thumbs down!
BTW: A variety of hair-straightening products used in professional salons can expose both hairdressers and their customers to formaldehyde. The results show that three professional hair-smoothing treatments labeled "formaldehyde free" can produce the cancer-causing chemical at concentrations above the occupational exposure limits set by the Occupational Safety and Health Administration. They tested four products: Coppola Keratin Complex Blonde Formula, Global Keratin Juvexin Optimized Functional Keratin, La Brasiliana Escluso Keratin Treatment with Collagen, and Brazilian Blowout Acai Professional Smoothing Solution. While ChemRisk tested four popular brands of hair straighteners, THERE ARE HUNDREDS on the market. Nov. 11-11

Adding chemicals to chemically treated hair is ADDING ANOTHER LAYER OF CHEMICAL that could be fatal to the customer! It doesn't work that way!

By contrast, beauty salon owners and stylists generally lack a scientific background and don't have a keen awareness of the danger of working with products that contain formaldehyde, experts say.

You want VOLUME, use plastic curlers, but don't add any more chemical to the hair.

Chemicals can enter the body through the skin.

Sources:
Google FDA.gov & search for Hair Dye & Relaxers.
Google: Hair Dye FAQ's Are Hair Dyes Safe?