During the formulation stage, various cosmetic ingredients—such as moisturizers, skin protectants, viscosity modifiers, and emulsifiers—are blended with spicules. This process typically involves separately heating and dissolving the aqueous and oil phases, followed by mixing and emulsification. The final product can be manufactured in diverse forms, including softening toners, nourishing toners, massage creams, nourishing creams, masks, gels, or skin-adherent types. To prevent degradation caused by reactions between spicules and other ingredients, formulation stability must be thoroughly researched, and the physical and chemical stability of spicules over time should be continuously monitored. Verification of skin safety in the final product is essential. Cosmetics containing spicules must undergo rigorous testing for skin irritation and allergic potential, and safety must be ensured by controlling spicule size and concentration. Furthermore, clear instructions and recommended usage guidelines should be provided to consumers to promote safe application.
