Dermalogica The Ultimate Gua Sha Roller. The Ultimate Gua Sha Roller. Boost your circulation and lymph drainage with our two-in-one sculpting gua sha and white jade roller for a brighter, firmer complexion.. To energise and firm your skin, glide the gua sha tool in upward sweeping motions along the face using the tool contours. Use the roller in an outwards direction to soothe and promote lymph drainage. For comfort adjust tool pressure from medium to light as necessary.