According to Eisai, Crystal Veil can be used as a preventative measure against airborne allergens such as pollen and house dust by applying a single drop the size of a sesame seed around the nostrils.
It is a product whereby the principal ingredient, positively charged water-soluble polymer, imparts an invisible filter-like screen of positively charged ions to effectively block such particles from entering the nasal passages.
Eisai recently added Crystal Veil as a new drug-free preventative measure against pollen and house dust to its ‘Skainar Series,’ a range of over-the-counter drug products for the alleviation of allergic symptoms ‘such as sinus infections, and is now marketing the complete series for the prevention and relief of nasal symptoms.