They do fade,as they age,Baytree29..maybe it's time to give it a light trim ...you may get more flowers yet..

If you mean the flowers have faded, time to cut back - trim off all flowered stems, and take no more than an inch of foliage at the same time - less if your plant is new or very small.

thanks for the answers,its the flowers that have faded,I bought it in April

Then follow the instructions I gave in my previous answer - its important to take a little foliage when you cut back because lavender gets woody and leggy after 5/7 years - much sooner if you don't trim the foliage back a couple of times a year after flowering.