RapidLash is a cosmetic product claiming to grow lashes. Like many companies with their version of lash-growing products, RapidLash wants to compete with Allergan’s expensive prescription-only version called Latisse ($160 for 0.1 ounce). Most of these Latisse-wannabes are nothing more than colorless liquid eyeliners with some peptides thrown in that have no research showing they can affect hair growth. RapidLash stands apart not only because it costs considerably less than Latisse but it does, at least in theory, work to grow lashes.
A serious distinction between Latisse and RapidLash is that Latisse is a prescription-only drug. Therefore, it is subjected by the FDA to intense scrutiny, proof of safety, and proof of efficacy. Because RapidLash is a cosmetic, it is not subject to these same requirements. Rocasuba, the company that distributes RapidLash, has done some amount of their own testing, but it pales in comparison to the level of testing Latisse went through to prove what it can and can’t do and what risks accompany its benefits.
Claims for RapidLash are carefully worded so they remain strictly cosmetic and not like a drug but here’s the difference: RapidLash does contain an ingredient that quite possibly allows it to work like Latisse. The active ingredient in Latisse is bimatoprost. Bimatoprost is the active ingredient in the prescription medication Lumigan used to treat glaucoma. Patients with glaucoma who used Lumigan noticed their eyelashes really grew and got darker. Allergan owns Lumigan and so they took advantage of this side effect and obtained FDA approval to sell this active ingredient as a lash growing treatment.
RapidLash contains an ingredient called isopropyl cloprostenate, which has some distant molecular similarities to bimatoprost. While there is no published research showing isopropyl cloprostenate can grow lashes, its relation to bimatoprost clearly exists. This association is the likely explanation behind RapidLash’s runaway success. A quick Google search produces thousands of online “fans” all attesting to its efficacy.
Given there is evidence that RapidLash could work similarly to Latisse, it is therefore possible that the same side effects associated with Latisse could occur when using RapidLash as well. Bimatoprost can cause irritation, redness, a bluish skin discoloration around the eye that could be permanent, and a permanent change in eye color among other potential problems anyone considering Latisse should be told about. The company selling RapidLash says they have no research or evidence showing these risks exist for their product, but their research is not reviewed by the FDA nor are they required to perform the mandatory safety and efficacy tests for drugs required by federal law. However, it is reassuring that the company has made the efforts to ensure the safety of RapidLash, and they willingly provided these documents to us.
So should you consider trying RapidLash for longer lashes and fuller eyebrows? The Cosmetics Cop Team is leaving this product unrated and not making a conclusion one way or the other. There just isn’t enough substantiated information to make a clear recommendation. For your own eye health, if you do decide to try RapidLash, or Latisse for that matter, watch for any negative side effects as mentioned above and it never hurts to check with your doctor first. Bottom line: RapidLash should work, at least in theory, to produce the results you want.






