The original brushes can be thick and "soak up" more product than necessary. Many users look for finer alternatives to make their prescription last longer. Where to Buy Replacement Brushes

Reviewers from sites like RealSelf often recommend using a small angled brush or a precision liner tool for better results.

Offers a wide variety of sterile disposable eyelash brushes and micro-applicators specifically designed for serum application.

Specialized authorized resellers like SkinSolutions.MD focus on lash care and often provide kits with a higher number of applicators (up to 140) to ensure you never run out. Popular Professional Alternatives

Carries large packs of disposable micro-applicator brushes (often up to 400 pieces) for a very low cost.

While you cannot usually buy the "official" Allergan brand applicators without a new Latisse prescription, you can find high-quality, sterile alternatives at major retailers:

Many beauty enthusiasts and even some dermatologists suggest moving away from the "factory" brushes in favor of tools that offer more control:

Running Out? How and Where to Buy Latisse Applicators Separately