Good day. Thank you for your question. Hollowness under the eyes is quite common and it’s a condition we treat often at Skin Renewal. Yes, collagen definitely play a role, it give support and structure to our skin. Collagen works together with elastin and hyaluronic acid to ensure the skin stays plump and youthful. The best treatment option for you will be dermal under eye fillers. These fillers are made of Hyaluronic acid that will plump the under eye area to relieve any hollowness. Other treatments that can be done to prevent this include Carboxytherapy and Radiofrequency. These treatments will increase collagen, elastin and hyaluronic acid product to retard the ageing process in that area. Using a good topical eye cream will also assist in preventing under eye concern. Be sure to use one that contain growth factors and peptides to ensure the best results. Please visit https://www.skinrenewal.