Keratin hair straightener from Advanced Clinicals:

the description:

• Advanced Clinicals Keratin Smoothing & Shine Treatment is an easy and convenient spray to use, which protects and smoothes your hair.
• Keratin creates a smoother, silkier appearance, by making your hair cuticles less prone to frizz
• Keratin softens hair cells and fights dryness
• Suitable for all hair types.

How to use:

 Spray it on clean, damp hair. Gently massage from roots to ends, leave your hair naturally or style as usual.