Hello Cynthia,
Depending on your skin type and the goals you are trying to achieve, it is generally advised to limit your therapy to 3-5 per week for a a range of 10 to 15 minutes each. You need understand that you may not get immediate improvements on your first few, but keep at it!. You will gradually see results and be able to adjust the amount of therapies you need.
Red light therapy is very safe, using rubylux has been great for me so far. Go get your skin some princess sparkles…
I hope this helps?.