October 09, 2012 Question: Calcium Hydroxylapatite For Collagen Stimulation - Which technique is best? October 09, 2012/ Sabine Zenker, MD What Calcium Hydroxylapatite injection technique is best for collagen stimulation? It is well known, that CaHA stimulates collagen production. Which is the best-in-class injection technique to maximize the desired effect and ho much risk should you take? Mesotherapy with CaHA? Linear threading with blunt tip Cannulas after having effected subcision?