Liquid Keratin is a simple, completely safe at home and salon keratin treatment that is free of harsh chemicals.
Liquid Keratin offers a range of product for different types of hair with such examples such as:

Liquid Keratin’s at 60 Day Straighter, Smoother, Stronger & Longer Home Treatment is a formaldehyde free, safe, easy to use, at home keratin hair treatment that tames unwanted frizz, loosens curl, smoothing and softens hair texture, adds shine, and keeps hair manageable and healthy for as long as 60 days with just one application.

Liquid Keratin Professional Restorative Smoothing This exclusive keratin system is formulated to promote the smoothing and semi-permanent relaxing of a range of hair types while repairing damage caused by other chemical processes. This product does not contain formaldehyde.
Liquid Keratin Professional is also free of all donors/releasers of formaldehyde, aldehydes, thio, sodium hydroxide urea, and guanidine.

The company also offers a range of ancillaries including the hugely popular Keratin Infusing Healthy Hair De-Frizz Shampoo and Deep De-Frizz Conditioner which improve and enhance the results of the Liquid Keratin treatments as well as those of other popular salon keratin treatments.
Liquid Keratin continues to develop new products to provide options for all hair types as the company continues to revolutionize the hair care industry.

Keratin is a protein and the major component in skin, hair and nails. In fact, the hair strand is comprised of up to 95% of Keratin hair proteins. Keratin acts both as an external protective protein in the cuticle (the outer layers of the hair strand) and as an internal structural protein in the cortex (the inner core of the hair that helps determine its strength).
Keratin is depleted when hair is damaged physically, chemically and/or from environmental factors, such as the sun. The keratin loss exposes the hair's cortex, making it susceptible to additional damage, and causes porous spots to develop - much like potholes in a road. Replenishing lost keratin helps to correct porosity and smooth the hair's surface. It restores strength and elasticity, giving the hair a more youthful, healthy appearance.
WHAT IS KERATIN

Products from Liquid Keratin do not contain harsh chemicals and is fragrance free.

Formaldehyde Free
Aldehyde Free
Relaxer Free
Thio Free
Sodium Hydroxide Free
Guanidine Free