Lacsoft Cream may help lighten tanning on elbows and knees, but the time to see improvement varies with skin type, severity, and consistency of use. Typically, noticeable results can appear in 4 to 6 weeks, but complete lightening may take longer. In some cases, the tanning may not fully resolve with cream alone and may require further medical intervention. Consistent application, sun protection, and minimising friction can improve results; a dermatologist should be consulted if there is only a slight improvement.