Here's Intelligent Nutrients' top 3 tips for staying heat wave ready. Moisturize!!! Super important for the summer sun, condition AND deep condition. Make sure you're using products that don't just sit on the surface. IN Replenishing hairspray is a moisture remedy that also adds shine and helps defrizz. Perfect shiny hair! If you want even more shine, add a mist of IN Hair Shine to your hands and smooth over your finished style.