Customer Satisfaction: The BOND is 5g / 0.176 oz and the LOCK is 5g / 0.176 oz. If the product has any quality problems or you have any other suggestion, please contact us, we will reply to you immediately after receiving your email. Customers' satisfaction is our greatest pursuit. Super Strong Hold & Waterproof: The lash bond has a long-lasting holding power, waterproof, sweat-resistant. And the lash seal can extend the life of eyelash extension. Never worry about false eyelashes falling off suddenly, super strong hold for at least 48 hours. Easy Application: First, curl up your natural lashes with the lash curler before applying; Second, use the BOND to brush a thin layer of glue under your natural lashes just like using mascara. Third, pick up cluster lashes to gently place them underneath the natural lashes. Finally apply a thin layer of LOCK for reinforcement. Gentle Formula: Gluten Free, Sulfate free, BPA free, Latex-free & Alcohol-free. This cluster lash glue uses mild and advanced formula, non-irritating, can hold false eyelashes firmly. Suitable for sensitive eyes, not damage your natural lashes or irritate your eyes. Sealer with vitamin E that can locks your lash extension into place for a comfortable wear. 2 in 1 Lash Bond and Seal: Double-headed design, one side is bond, with spiral mascara brush head that helps apply glue more evenly, as easy as applying mascara. The other side is the lock, which helps to form a protective layer on the grafted lashes and effectively improves the adhesion of the bond.