What type of nail product does Methyl methacrylate monomer (MMA) notoriously struggle to adhere to?

Methyl methacrylate monomer (MMA) is known for having particular issues with adhesion on natural fingernails. The chemical structure and properties of MMA can lead to challenges when it comes to bonding with the natural nail plate, which is composed mainly of keratin. The natural nail has a unique texture and moisture content that can interfere with the adherence of MMA. This lack of adhesion can result in lifting, which is a significant concern in both salon quality and nail health.

In contrast, MMA typically adheres well to artificial surfaces, such as acrylics and nail tips, because those materials are designed to create a strong bond with MMA. The other options, including toe nails and gel nails, do not encounter the same level of adhesion issues associated with natural fingernails. Therefore, the recognition of MMA's challenge in sticking to natural fingernails is rooted in its chemical properties and the nature of the nail itself.