Encap TLC attacks all soils found in carpeting. Its unique formula emulsifi es them, and then using the latest technology, encapsulates the soil for easy removal. Because the soil is encapsulated, whatever does not come out during extraction, will come out during vacuuming. It can even eliminate the need for re-shampooing when wicking occurs in heavily soiled carpets. EncapTLC will not remove the stain resistant properties manufactured into the carpet and will actually replenish them. As a bonus, this product eliminates the need for a defoamer, even on carpeting with residue from previous cleaning. Our Encap carpet care products do not contain any optical brightener. Most carpet manufactures object to their use because they can distort the carpet color even after one use. Encap products are also formulated in a pH range so they will meet all carpet manufacturers recommendations for â€œWet Sideâ€ cleaning.