Fixx Hair Growth Duo with light therapy and collagen stimulatorEnhance your growth program at home with light therapy and collagen stimulation 50% 50% of Americans notice a change in hair density by age 50, 66% of men report a reduction in hair volume before 35, and 12% of women observe similar changes by age 30. Use your light therapy 3 4 nights per week and the collagen stimulator once per week 150 Shedding up to 150 hairs a day is part of the body's natural rhythm. But over time, age related changes can