What condition does a loose base in a lash extension lead to?

A loose base in a lash extension affects the adhesion between the extension and the natural lash, which directly contributes to inconsistent lash retention. When the bond created by the adhesive is not secure due to a loose application, the extension is more likely to detach prematurely. This can lead to uneven loss of lashes over time, resulting in patches or gaps in the lash line.

In contrast, a tight and secured base is crucial for maintaining the longevity of the extensions, ensuring they stay in place until the natural lash sheds. Thus, it's essential for lash artists to ensure proper application techniques to create a strong bond for optimal retention. The other choices do not correlate with the effects of a loose base; they generally suggest improvements that would not realistically result from a compromised lash extension application.