Yes, it is generally recommended to use hyaluronic acid before collagen in your skincare routine. Hyaluronic acid is a humectant that helps to attract and retain moisture in the skin, making it plump and hydrated. It also acts as a delivery agent, helping other active ingredients penetrate deeper into the skin. Applying hyaluronic acid first allows it to create a moisturizing barrier on the skin, which can enhance the absorption and effectiveness of collagen when applied afterwards. Collagen, on the other hand, is a protein that helps to support the structure and elasticity of the skin. By using hyaluronic acid first, you can ensure that your skin is properly hydrated before applying collagen, which can further enhance its benefits.