Shrinkage is a sign of healthy hair. It shows that your hair’s elasticity (the ability of the hair to stretch without breaking) is NORMAL.
If you notice, I never use the word SHRINKAGE in describing my hair length because I understand that shrinkage indicates healthy, happy hair.
Wet Hair with normal elasticity will stretch up to 50% of its original length and return to that same length without breaking.
Dry hair stretches about 20% of its length.
Hair with low elasticity is brittle and breaks easily.
How to test Your Hair Elasticity
Check elasticity on wet here by taking an individual strand from four different areas of the head (front hairline, temple, crown, and nape). Hold a single strand of wet hair securely and try to pull it apart. If the hair stretches and return to its original length without breaking, it has normal elasticity. If they hair breaks easily or fails to return to its original length, it has low elasticity.