Ocular tolerance and fiber strengthening of a waterproof mascara with rice protein

        Mascaras need to be carefully formulated and tested for ocular tolerance because of their use in such close proximity to the eye. Waterproof mascaras have additional ingredients that aid in increasing resistance to external assault by water, and these formulations may be prone to irritate those with sensitive eyes or may irritate because of the need for more rigorous removal methods. This clinical study evaluated the irritation potential of a waterproof mascara containing rice protein used in conjunction with a two-phase silicone eye makeup remover. Rice proteins are known for their gentleness and mildness while providing conditioning and volumizing benefits to hair and eyelashes. Fifty healthy female subjects between 18 and 48 years of age who are regular mascara users (including a subset of contact lens wearers and another subset of individuals with sensitive eyes) completed this 2-week study. Comprehensive ophthalmologist evaluations and self-assessments showed tolerance and benefits throughout the study. Instrumental analysis measured changes in strength and fatigue resistance of hair fibers coated with the mascara. Ophthalmologist evaluations indicated no significant change in irritation parameters (P < .05) including edema, follicles, papillae, lacrimation, stinging, burning, itching, and photophobia over the 2-week study. Patients perceive this mascara to be well tolerated and provided significant benefits, including lashes looking longer, and the mascara contributed to the healthy and natural look of their lashes as well as leaving lashes soft to the touch after removal. In addition, instrumental assessments documented a significant increase in the tensile strength of the lashes.
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