Loma Pearatin Volumizing Shampoo plumps, thickens and protects. Loma Pearatin Volumizing Shampoo is a weightless, sulfate-free formulation with advanced skin-care technology and thickens the hair shaft. It plumps, hydrates and swells the hair from the inside out. Loma Pearatin Volumizing Shampoo adds fullness, volume, and thickness to fine hair.