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Hair and Skin Testing Tutorials
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Curl development test step-by-step
4 minutes
Explore how to test the development of a perm in this foundation curl development test MHD step-by-step.
How to do a colour test
3 minutes
Explore how to perform a colour test in this essential MHD testing tutorial with Tracey Sajno. A colour test is performed during colour development to check the target colour and development time.
How to do an incompatibility test
3 minutes
Learn how to perform an incompatibility test in the essential MHD testing video with Tracey Sajno. An incompatibility test checks for the presence of metallic salts, before a chemical service.
How to do a porosity and elasticity test
2 minutes
Learn the essential porosity and elasticity test process with Tracey Sajno. Porosity and elasticity tests determine the condition of the cuticle and cortex.
How to do skin testing
4 minutes
Tracey Sajno’s lecture covers the essential skin test process. Testing is a necessary and vital part of any hairdressing business.