Nano Hydroxyapatite (Nano-HAp) Ultrafine bioactive HAp engineered for tooth enamel remineralization, sensitivity relief, and whitening formulations. Consumer Hydroxyapatite Cosmetic and dental-grade HAp for mass-market toothpastes and mouthwashes focused on enamel care and polishing. HAp Discs Standardized hydroxyapatite discs for in-vitro toothpaste testing, whitening performance evaluation, and abrasion studies.