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By Jennifer Talmage
April 19, 2021

TARTE MultiplEYE Treat Lash Enhancer

The Tarte MultiplEYE Treat Lash Enhancer is advertised as a serum that works to improve the overall appearance of eyelash length and thickness.

The manufacturer of the MultiplEYE Treat Lash Enhancer, Tarte, is known for using high-performance, natural ingredients on each product within the line. They claim this high-quality lash enhancer is designed to work over a period of time to intensify the appearance of your natural lashes.

With the product performance claims made by the manufacturer along with the natural ingredients used within the formula, could this product truly enhance eyelashes without the need of chemicals that are commonly found in cosmetics?

Main Ingredients

This lash enhancer from Tarte is made up of ingredients said to be rich in nutrients. These ingredients include proprietary HydroPlant peptide, a soy-amino super protein blend, vitamin C and cellulose.

With a consumer-friendly ingredient list available on the packaging label as well as on the manufacturer’s website, it appears as though they are not trying to hide anything when it comes to their products formula.

To help consumers in determining whether or not this lash enhancer provides the results that the manufacturer advertises, I have researched the key ingredients in the lash serum.

Polyaminopropyl Biguanide

Polyaminopropyl Biguanide is a type of synthetic polymer that is commonly used as a preservative and anti-bacterial agent. This ingredient is typically found within facial products, hair products, body wash and sunscreen.

It is known for being mild on the skin and the eyes, which makes it useful in eye care products and serums. [1]


Adenosine is a chemical present within all cells of the human body. It combines with phosphate to form various types of chemical compounds, which include adenosine monophosphate and adenosine triphosphate.

These ingredients are commonly used in medicines for treating surgical pain, high blood pressure, varicose veins and more. [2]

In one study, adenosine was used to provide an anti-wrinkle effect. A water-dissolvable film was developed containing adenosine. In the random, placebo-controlled study, a panel of females assessed the efficiency of the film. After a 3-week and 8-week period, a significant decrease in the roughness of the skin around the eyes was observed in all study participants. [3]

Magnesium Ascorbyl Phosphate

Magnesium ascorbyl phosphate is a vitamin C water-soluble derivative that has become increasingly popular in skincare products. It is known for being more stable and less irritating to the skin than vitamin C alone.

However, it still has the same potential as vitamin C to boost the skin collagen synthesis. It is an ideal ingredient for those with sensitive skin who wish to avoid exfoliating effects. [4]

When used in skin care products, magnesium ascorbyl phosphate provides UV protection while providing skin lightening and brightening results as well as collagen production. [5]

Tarte advertises its unique HydroPlant peptide as an ingredient used to help improve the appearance of lash length, growth and softness. The cellulose is a plant-derived ingredient designed to act as a thickening agent. The vitamin C is said to play the part of an antioxidant booster that helps in nourishing and fortifying the lashes.

How to Use Tarte MultiplEYE Treat Lash Enhancer

For the best results, Tarte recommends using this product on clean and dry skin only. This is said to help protect the integrity of the formula. This lash enhancer should be used once per day either in the morning or night as desired.

It should be applied directly to the lash line in the same way you would apply eyeliner. For extra added results, Tarte states you are also able to apply the formula by brushing it directly on to the eyelashes. However, direct contact with the eyes should be avoided.

The product should dry for at least 1 minute before adding makeup to the area. After application, Tarte states the area should not be rinsed for 2 to 3 hours for the best results.

Is This Lash Enhancer Safe to Use?

Tarte Cosmetics are known for their naturally formulated products. The MultiplEYE Treat Lash Enhancer is formulated without parabens, mineral oil, gluten, phthalates, triclosan and sodium lauryl sulfate.

Although the products are all-natural, irritation may still occur. If irritation or redness occurs, Tarte recommends discontinuing use. It is not intended to treat, prevent, cure or reduce hair loss. The product should also be kept out of the reach of children.

Those who are pregnant or nursing should consult a physician before using the Tarte lash enhancer.

What Customers Are Saying

The MultiplEYE Treat Lash Enhancer boasts an average 4 out of 5 star rating from customers around the world. Most customers find this product to be effective after being a little skeptical about trying it at first.

One customer states, “I purchased this product in December due to an eyelash extension disaster! My lashes were gone, literally like nubs on my lids. Well it is now March and my lashes are longer and thicker than they have been in years. I use it every night after my face is washed and dried and I’m still amazed with the results.”

Is MultiplEYE Treat Lash Enhancer right for me?

I would recommend giving this product a try if you are in search of a natural solution for improving the appearance of your eyelashes. With a range of ingredients backed by research, I feel as though the product should live up to the claims made by the manufacturer.


[1] Polyaminopropyl Biguanide. Available from:

[2] Adenosine. WebMD. Available from:

[3] Adenosine. Legendre JY, Schnitzler I, Li QY, Hausen C, Huart M, Luengo GS, Abella ML, Roreger M. “Formulation, characterization, and efficacy of an adenosine-containing dissolvable film for a localized anti-wrinkle effect.” Available from:

[4] Magnesium Ascorbyl Phosphate. “Vitamin C derivatives: skin benefits of ascorbic acid without the downside.” Available from:

[5] Magnesium Ascorbyl Phosphate. Available from:

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