I used +5 and +3 for a week. My lips would always get chapped even when I would moisturize them but this solved everything. I apply just once during the day. I use this on its own and it does come off during meals but doesn't come off in chunks and +5 has a subtle red shade and keeps my complexion looking healthy. I'm not sure about the effect on dullness of lips, but suppressing lip roughness is enough for me.
Eye & Lip Care
SPF20・PA++ The perfect bare lips are when your body temperature rises to 38°C for a flushed, rosy look. This lip treatment make the perfection possible. With original serum ingredient "endmineral (R)". Increasing your circulation, it will lead to 38°C colored lips. It also focused on the bacteria living in the skin. Combined lactic acid bacteria "La Flora" that actively treats the bacteria of the skin flora for the first time in the world. Adjusts the "lip flora", and nurtures the lips to a self moisturizing state even after meals where the product is gone. A pigment that will not dye your lips. Prevents dullness and hyper pigmentation of thin, delicate lips. Since the lips are mostly likely to be easily damaged with weaker barrier functions, we added a UV cut feature. It will protect the lips from UV rays.