More beauty on a budget. I bought the Spring Valley Collagen Serum, 2 Oz for a few dollars (US) at Wal-Mart. I've been using it every AM and PM for a month. I know that we cant replace collagen on our skin with serum due to molecule size but it can help fill in fine lines and retain moisture making the skin tighter and smoother. I can definitely tell and feel a difference. Only takes a 3 to 5 drops and I apply after my essences and before other serums. It is fragrance-free and is not tacky or sticky. I highly recommend for a budget friendly product. I recommend either way. #holygrail #nofilterskin #skincare