Maro 3D Volume Up Shampoo - Achieve 150 More Volume Improve Scalp + Repair and Strengthen for Healthy Hair - w/Soy Protein Gfrom £22.53 up to £37.34 Compare prices3→A volumizing shampoo infused with hair-reviving Soy Protein Glutamic Acid and Whey to strengthen each strand and protect against thinning hair.