Dentures should be cleaned thoroughly either with warm water or a specialist denture toothpaste. Shake off excess water. Apply the fixative however, using too much fixative may result in 'oozing'. Using smaller amounts may provide better adhesion. The amount used will vary between dentures. A good fixative applied in the morning should last all day!
If you are concerned with the fit of your denture, it is important that you bring it to the attention of your dentist at Craigmillar Dental Centre during your dental examination.