Lower molecular weights can go deeper into the skin. Not all products list these, so it’s best to research online or ask the manufacturer for more details.
Use once per day or every other day initially to ensure it’s safe in the long term
If you have sensitive skin, you may want to keep to lower strength hyaluronic acid formula so you don’t risk a reaction or dryness.
Research the ingredients in your product to ensure you’ll achieve the correct concentration of hyaluronic acid.