Eyelash adhesives and sensitization

LashLovers Oy is a manufacturer of Finnish high-quality eyelash extension products. Our goal is to provide customers with the safest and most user-friendly products possible. We are continuously involved in research and development work, together with equipment manufacturers. All products are manufactured according to strict quality standards and each product has been subject to safety checks and documentation, in accordance with EU regulations. These include, for example, obligatory safety data sheets of chemical statutes and obligatory safety data sheets of cosmetics statutes. Our selections includes eyelash adhesives manufactured in both the EU and Asia.

Eyelash adhesives and the use of thereof, as all chemical or cosmetic products, may contain some risks to the user. In order for the adhesives to be suitable for their purpose, potentially sensitizing ingredients may also be added to them. Thus protection against adhesive fumes is very important.
Our co-operation with top-notch safety gear brands enables us to provide suitable safety products for our customers.

The safe application of eyelash extensions requires a trained professional, who has the knowledge to minimize exposure to the adhesives in both the customer's and the professional's case. The safe use of chemicals requires protection from chemicals as well as precaution when using chemical products. This way the likelyhood for sensitization can be kept at a minimal level. 

The source for the below text is a comprehensive report compiled by LashLovers Oy Ltd in co-operation with experts in the field of chemical safety. Publicly available information on the components of the products, the products' hazard classification, exposure and protection, focusing on LashLovers Oy’s imported adhesives and the adhesive compositions were used when making the report. If you plan on quoting the below text, the original source must be mentioned: LashLovers Oy Ltd.


According to cosmetics regulations, eyelash adhesives are not cosmetics and fall under chemicals regulations. The task of an eyelash adhesive is to mechanically bond an eyelash extension to one’s own lashes, while mascara that falls under cosmetics changes the appearance of the eyelashes. TUKES monitors the legislation in Finland. If there are legislative changes in the future, so that eyelash adhesives are considered to be cosmetics, LashLovers Oy Ltd is already prepared to import EU manufactured eyelash adhesives as cosmetics. This means that all the components used in eyelash adhesives are also permitted for use in cosmetics.


According to the current chemicals regulations, there is no need to declare the eyelash adhesive material components on the “so-called” INCI listings, but, instead, a safety data sheet has been prepared, according to REACH and CLP regulations. The safety data sheet presents all the components that are classified as being detrimental to health and the environment. At the same time, the product packaging and transport labeling is also determined. The task of the safety data sheet is to provide the user with instructions for the safe use and storage of the product.


Eyelash adhesives mainly contain a variety of adhesives, or monomers and pigments. Additives are, for example, dispersing and emulsifying agents to ensure a uniform composition and distribution of the pigments to the entire monomer mixture or adhesive-material.

LashLovers Oy Ltd eyelash adhesives use, for example, a black pigment that is permitted in eye cosmetics. The pigments are so called hydrophilic, i.e. they are evenly distributed into water droplets, but are not distributed evenly as such, for example, when used in an adhesive. For the small-sized pigment particles to also be distributed evenly in adhesives, the pigments are first mixed, or dispersed in water. The pigment-water dispersion is mixed or emulsified in the adhesive. The task of the emulsifier is to keep the water-pigment mixture evenly distributed throughout the adhesive. The ready adhesive mixture is not a breeding ground for bacteria or other microorganisms, due to the scarcity of water.

An adhesive is composed of monomers, or similar molecules. Often, adhesives contain different monomer mixtures. When hardening, the adhesive monomers combine as long molecular chains, or polymers. The pigment particles are firmly attached between the polymers to give a colour to the hardened adhesive. The purpose of various polymers, for example, is intended to provide strength and durability to the hardened adhesive drops. They can also affect the speed of the drying of the adhesive. Various types of polymers are formed, for example, by cyanoacrylates and polyisocyanates.

For example, the polymerization reaction of polyisocyanates, or the combination of monomers to form long chains (adhesive hardening), begins when the adhesive comes into contact with moisture in the air or water. Polyisocyanates form amines when affected by moisture, which forms long polymer chains with polyisocyanates.

Cyanoacrylates and polyisocyanates are used in many eyelash adhesives. One of the most frequently used cyanoacrylates, ethyl-2-cyanoacrylate, has been classified, according to EU chemicals regulations (CLP; EC / 1272/2008), as irritating to the eyes and skin. Adhesives with ethyl-2-cyanoacrylate of more than 10% are categorised additionally as being a possible irritant to the respiratory tract. Individual cyanoacrylates released into the air from liquid adhesives can polymerize, in the presence of moisture, for example, in the nasal mucosa. The polymerization reaction on a sensitive mucous membrane may result in an irritation. Various types of cyanoacrylates are also used in medicine as wound closers and as plaster-like protectors, instead of stitches.


In sensitization, the body's own defense mechanisms of the immune system are activated towards, in itself, harmless substances. Sensitization is divided into two parts: in the first stage, the immune system learns to respond to the sensitizing substance. In the second stage, even a small exposure to the substance in question can result in visible symptoms, such as itching, rashes, or rhinitis. Often, the first stage requires a higher exposure than the second phase.

Chemicals can be sensitized to through the skin and by inhalation. Sensitization is individual and some studies suggest that a susceptibility to sensitization may be hereditary. Sensitization can occur to different ingredients. Accurate information on the reasons for sensitization is not available, however, even though the medical mechanism is known quite well.

Fragrances used in cosmetics may contain sensitizing ingredients, or allergens, regardless of whether the perfume is synthetic or “so called” natural. Also, hair dyes may contain sensitizing ingredients, which can cause visible symptoms. If the amount of sensitizing components exceeds their concentration limits, the names of the sensitizing components must be made aware to the users through the product labeling, regardless of the product specific regulations. According to cosmetics regulations, the names of sensitizing components of cosmetic products have to be written in the “so called” INCI list, while the sensitizing components of products under the EU chemical regulations must be marked in safety data sheets. In addition, the product packaging must hold the appropriate warning labels. The sensitizing in LashLovers Oy Ltd’s eyelash adhesives are cyanoacrylates and (poly) isocyanates, used as adhesive components.

Contact with the skin increases the risk of sensitization, so that skin contact should be avoided with liquid adhesives. When drying, the adhesive components stick (polymerize) to each other, whereby the potential for exposure to sensitive components is significantly reduced. A professional in eyelash extensions will be able to attach eyelash extensions to natural eyelashes without skin contact taking place.

Acrylates mainly cause an allergic reaction when coming into contact with the skin, but to some extent also to the breathing tract. Exposure to adhesive fumes may be minimized through the use of professional air-conditioning solutions, such as, for example, local exhaust ventilation. However, despite this, a professional may be exposed to adhesive fumes throughout their working day. Therefore, it is more likely that the eyelash adhesive components will be sensitive to the professional carrying out the eyelash extensions, rather than the customer. As a result, it is of upmost importance for the professional to be protected from the sensitizing materials. Read more about protective gear and occupational safety here

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Terms and conditions


Orders will only be accepted through the online store (no telephone or e-mail orders). This will guarantee customers short delivery times, as well as the possibility to fully benefit from our reward system.


LashLovers® products are intended for professional use only. To order products from the LashLovers Oy online store, the customer must register in the store and during registration provide either a valid VAT number or proof of having attended an eyelash extension course of a well-known brand. Registration is free of charge. LashLovers Oy Ltd holds the right to refuse a registration.


The customer will receive an order confirmation sent to the email address that they have provided. LashLovers Oy Ltd reserves the right to refuse an order. The orders are typically processed no later than the following business day after receiving the order. Delivery time depends on the destination country and selected delivery method. 

The customer has the right to cancel an order, if the delivery is delayed due to a reason caused by LashLovers Oy, by notifying LashLovers Oy of cancellation by email. LashLovers Oy Ltd reserves the right to cancel an order, in so far as the ordered product is sold out or if there are other insurmountable difficulties concerning its availability.


LashLovers Oy Ltd does not, in principle, grant product warranties for the professional products it provides. In regard to eyelash adhesives, it is expected that the user has become familiar with the user instructions before using the product. If you have any questions about LashLovers products, kindly contact our customer service: tuotetuki@lashlovers.fi.


The valid price is the price that is notified at the time the order is made. LashLovers Oy Ltd reserves the right to fix erroneously recorded prices. The prices include the currently valid VAT (where applicable). In accordance to the Cross-border VAT rule, if goods are sold and sent to a business in another EU country, VAT is not charged, granted that the customer has a valid VAT number.

Delivery costs are determined based on the selected method of transport. Further information on the methods of payment is available here.


All major payment methods are available on the online store. Further information on the methods of payment is available here.


The returned product must be unopened and unused, as well as in its sales condition.
If the customer cancels their order before the goods have already been sent, LashLovers Oy Ltd has the possibility to charge a reasonable compensatory amount for the costs for the money transfer and any inconvenience caused.
If the product has become broken or damaged during the postal delivery, the customer can return the product at no charge to the service provider as a customer return. The return must be accompanied by the customer's contact details, the reason for the return, as well as information as to whether the customer desires a new product or to cancel the trade, in regards to the ordered product. Always contact customer service at tilaukset@lashlovers.fi prior to return of goods. 

According to legislation from 2011, an online store is not obliged to automatically pay for the costs of customer returns.


Disagreements arising from an order and agreement relationship presented here will be settled at Joensuu District Court.