Goldwell Kerasilk Control Keratin Smooth 2 – Medium, 500 ml / 16.9 oz, is a customizable keratin treatment designed for salon professionals who want to tame unruly curls while delivering a lasting, frizz-free finish. By pairing this formula 1:1 with Kerasilk Control Keratin Shape 1, you can tailor results to each client’s curl pattern and hair needs.

Powered by Thermo-active KeraShape Technology, the treatment activates with heat to deliver durable smoothness that you can dial in for individual results. The blend of Glyoxylic Acid with Precious Silk & Keratin Proteins works to rebuild internal bonds, smooth the hair cuticle, reduce curl, and restore damaged strands. The result is noticeably softer, shinier hair with improved manageability—and a finish that can last up to five months.

• 1:1 mixing ratio with Kerasilk Control Keratin Shape 1 for customizable results
• Thermo-active KeraShape Technology that activates heat for lasting smoothness
• Glyoxylic Acid combined with Silk & Keratin Proteins to rebuild bonds and restore damaged hair
• Curl reduction and frizz control ideal for unruly or highly frizzy hair
• Leaves hair soft, smooth, shiny, and easier to manage—up to five months
• Professional salon use only; size: 500 ml / 16.9 oz

How it works

This treatment targets the hair at its core, using a keratin-rich formula to rebuild and reinforce bonds while smoothing the cuticle. The Glyoxylic Acid component supports bond restoration, reducing curl where needed and converting rebellious waves into controlled, polished texture. When combined with Kerasilk Control Keratin Shape 1 in a 1:1 ratio, the Thermo-active KeraShape Technology uses heat to set the results, delivering a durable, frizz-free finish that remains visible for months.

Why it stands out

• Customizable results: adjust smoothness and curl management by varying the mix with Shape 1
• Bond restoration focus: not just a surface coating—this system rebuilds and strengthens
• Long-lasting control: up to five months of frizz-free, manageable hair
• Targeted for damaged or extremely frizzy hair to restore health and shine

Ideal for

• Clients with unruly curls seeking durable straightening with a natural feel
• Those experiencing persistent frizz in high-humidity environments
• Damaged hair needing bond restoration and improved elasticity
• Professional stylists looking to customize results for each guest’s curl pattern

Practical tips for best results

• Keep the 1:1 mixing ratio with Kerasilk Control Keratin Shape 1 to fine-tune results
• Use the thermo-activation step to set a long-lasting smooth finish
• Communicate expectations with clients: smoother, more manageable hair that remains frizz-free for months
• Ensure proper professional application and processing as this product is intended for salon use only
• Store in a cool, dry place and use within recommended guidelines to maintain effectiveness