Hair changes consistently over time, but the main concerns as we get older are a lack of thickness and shine. To revitalise your strands in your 40s, one expert recommends making a smoothie packed with seeds. Michelle Ravanat, 41, uses chia seeds, pumpkin seeds and sunflower seeds to transform her smoothie into a nutritional bomb. “This powerful hair smoothie is my secret to healthy hair at 41,” she told her YouTube followers. “It contains no dairy and no refined sugar and tastes really good. The beauty influencer proceeds by roasting her chia, flax seeds and sunflower seeds in a pan to enhanc…