It won't work well to stamp directly onto the base coat in any case. If you want a clear effect under the stamp apply one coat of clearly pink, cure then stamp.New I have the Shellac LED lamp and noticed my shellac wasn't lasting either. I noticed when trying to stamp on base coat, it was not cured, so, since, instead of using 10 second pulsating curing, I go for the one minute cure and since then my nails last as long as they did before! Hope this helps!