Singer Madonna has been keeping her skin 'lovely and glowing' by trying out a new clay face mask. The 55-year-old who recently launched Japanese brand MDMA has posted a series of close-up selfies on her Instagram page showing off the results of her home pampering session using the new products reports femalefirst.co.uk. She posted one snap of herself with a grey mud mask on her face along with the caption: 'Trying out the new Clay Mask from MDNA skin care line! Lets see if it works! #livingforlove (sic)'. She also posted a product shot of the mask and later showed