Gyeon Q2M Clay Mild | Chemical Resistant Clay BarGyeon Q2M Clay is our personal favorite clay for removing embedded contamination from paint. Gyeon's clay formulations will stand up to intense chemicals, this is important because clay is often used in conjunction with chemicals such as iron remover, which steadily break down or even dissolve lesser grades of clay and render them unusable. Gyeon Clay's chemical resistance means you will save materials, money and time throughout your detailing