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Rapid Lash Eyelash Renewal Serum

Reviewed by Marta November 18, 2010 50 Comments

The latest eyelash miracle worker to hit the morning TV talk shows is Rapid Lash Eyelash Renewal Serum ($48). The first thing to say about it is that, like Neulash, it contains a prostaglandin analogue called isopropyl cloprostenate.

Regular readers know by now that prostaglandins are drugs used to treat glaucoma that have the adorable side effect of making eyelashes grow like weeds. Less adorable side effects include irritation, impaired vision and the eyes may even change color (from blue to brown or vice versa). This controversial ingredient has been removed from some of the leading eyelash growth products, such as Jan Marini's new Marini Lash.

Again, like Neulash, Rapid Lash has added in a couple of peptides. However, I haven't been able to find any link to hair or lash growth for polypeptide 23 or octapeptide 2. Rapid Lash also has hydrolized glycosaminoglycans. This inhibits 5-alpha-reductase, preventing the conversion of testosterone to dihydroxytestosterone. I can see that this might be helpful with male balding, but I'm not sure that it will have much impact on lashes since they aren't impacted by testosterone and estrogen levels.

On the other hand, there is some evidence that copper tripeptide-1 improves hair growth by strengthening the follicle and speeding up the growth cycle. Indeed, I have used Folligen, a copper peptide lotion on hair and lashes with great success.

All in all, whether you try this (given that it is likely to make your lashes grow) depends on how you feel about prostaglandins. Isopropyl cloprostenate may, for all I know, be a completely safe version. But I personally won't be trying it until Rapid Lash shows me the results of their independently conducted trials.

Ingredients in Rapid Lash

Water (Aqua), Rhizobian Gum, Sodium Hyaluronate, Butylene Glycol, Hydroxyethylcellulose, Biotin, Panthenol, Pantethine, Hydrolyzed Glycosaminoglycans, Allantoin, Cucurbita Pepo (Pumpkin) Seed Extract, Sea Water, Dipotassium Glycyrrizate, Alcohol Denat (and) Isopropyl Cloprostenate, Octapeptide-2, Copper Tripeptide-1, Glycerin, Glycine Soja (Soybean Oil), Phosphatidylcholine, Polypeptide-23, Phenoxyethylene, Chlorphenisen, Sorbic Acid.

  • August 26, 2013

    by Toni

    I have used rapidlash for a few years now, around 3 or 4 and LOVE it! I have naturally fair, thin, short lashes. Not any more :)

    What Inga & Janko reported about the results only lasting through the first vial I believe has more to do with the growth cycle of the eyelashes and not the product. Just like all body hair the lashes go through 3 phases of growth:

    * Anagen - the active growth phase. Only 40% of the upper eyelashes are in active growth at any one time (only 15% of lower lashes are in active growth). This phase lasts 30 - 45 days
    * Catagen - the transition phase when the eyelash stops growing and the follicle shrinks. This lasts 2 - 3 weeks
    * Telogen - this is the resting phase and can last over 100 days before the eyelashes fall out

    Each eyelash is in its own cycle so there are some lashes in each phase at all times and most days at least a few eyelashes will fall out. Basically your eyelashes will go through stages where a lot of the super long lashes are falling out and new ones are coming in but have not reached full growth and therefore appear to be a shorter set of lashes. Not the case, they just haven't reached full length or gone into the "Telogen" or "Resting" phase.

    Similar complaints can be found in regards to waxing, sometimes the hair seems to grow right back and sometimes you stay smooth for weeks.....has everything to do with what phase your hair was in at the time of waxing.

    I think when it comes to Rapidlash the difference in growth phases can be more apparent thanks to the fact that it truly works and gives you incredibly beautiful, cRaZy long lashes!!! :)

    You should try it! BUT if you do not think you can commit to daily use don't bother, like most skin care treatments results are seen with consistent, long term use. Don't expect anything overnight, patience will truly pay off with this product.

  • January 23, 2013

    by Michele Watson

    Just a reminder-we now have AQ eyelash too! Can't wait to try this myself. I did use two tubes of Hydropeptide and I found it conditioning but nothing that noticeable. I have long lashes but really wanted volume. I am excited about AQ since Marta tried it herself and it worked.

  • January 23, 2013

    by Kim

    If I am not mistaken, RapidLash now uses a formula with no prostaglandins or like ingredients.

  • April 3, 2012

    by Michele Watson

    Hi I am going slowly but surely with Hydropeptide (TIA store-second tube). Here is a response from them after I asked re results-I am sharing it as it may be useful to others trying as I am to boost my post-menopausal lashes!Hello Michele,

    "The typical results that can be seen from HydroPeptide Lash is an increase in fullness first and then length. In clinical studies, within the first 2 weeks, a 25% increase in eye lash length was seen on most the participants with just one of the active ingredients within HydroPeptide Lash. By 12 weeks, you should see the full increase in length with the product but as you continue to use the product, you will continue to see a fullness and healthiness to the Lashes. Your lashes typically grow, get brittle, break off, and then grow again. Lash will help promote an extended growth phase of the lashes and brows than normal. Typically the lash anagen (growth) phase is 45 days but with HydroPeptide lash, you can extend this phase. Eventually, you will have some hair turnover but this is natural. If you were to discontinue HydroPeptide lash, your hair growth would return to a shorter anagen phase.

    What people comment they love most about HydroPeptide lash is that the lashes are fuller and look healthier. Many have used other lash products and saw length in just a few lashes that looked "spidery" and "twisted". You do not get this look with HydroPeptide lash. You get great, healthy-looking fullness but not ultra-dramatic length."

  • April 2, 2012

    by Junko

    My results with Rapid Lash were the same as Inga and her 2 friends. My opinion is that Rapid Lash is not worth purchasing!

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