Monserrat has been using the Total Nonscents Brightening Roll On by DERMAdoctor for over a month now, and she's impressed with its gentle brightening effects. She mentions that there is no stinging or burning sensation upon application, which is a big plus. While she does note that the product doesn't work instantly, she is happy to see some improvement in the lighter patches on her underarms. Monserrat advises being patient and consistent with its use to see better results over time. Overall, she is satisfied with the product and believes that with continued use, it may further brighten the underarm area.