Here's why:
* Petrissage focuses on muscles, not the scalp: The technique aims to relax and stimulate muscles, which are located beneath the skin. It does not target the scalp, the hair follicles, or the hair itself.
* Hair growth is primarily influenced by internal factors: Hair growth is mainly controlled by hormones, genetics, and overall health. While scalp massage can improve blood flow and promote a healthy scalp, it doesn't directly change hair growth.
* Petrissage might indirectly benefit scalp health: By relaxing the muscles and improving blood circulation in the scalp, petrissage may indirectly contribute to a healthier scalp environment. This can potentially lead to better hair growth, but it's not a direct effect of the technique itself.
In conclusion, petrissage massage primarily targets muscles and doesn't have a direct impact on hair. While it might indirectly benefit scalp health, it's not a proven method to stimulate hair growth.