Skim through

What it does: surfactant/cleansing, emulsifying, viscosity controlling 

The science

A mild, biodegradable cleansing agent that is also a very good team-player next to other cleansing agents. It is known for its good foam-boosting abilities while improving the mildness of the formula. Its performance is similar to Isethionates, another group of cleansing agents known for their gentleness. 

Benefits for your hair

Enhances hair appearance 

Sodium lauroyl sarcosinate has the ability to enhance the appearance and feel of hair by improving body, suppleness and sheen, especially in hair that is chemically damaged.

Cleans hair thoroughly 

This ingredient also serves to clean skin and hair by mixing with oil and dirt and enabling them to be rinsed away.

Reduces irritation from traditional chemicals

It can reduce the irritation caused by the residue of traditional surfactants on the skin with its good compatibility properties. 

TLDR 

Sodium lauroyl sarcosinate is an amazing biodegradable cleansing agent that cleans and conditions the hair well and reduces irritation from traditionally harsh chemicals.