Lions used moisturizing cream for playing piano for 30 years.  Too much & it makes the keys very slippery.  Too little & cracking skin is the result.  Get it just right & it makes the keys grip more.  What if there was no guesswork & adhesion was added to make a cream that let pianists grip the keys more.  It could make more money than actually playing music.  A grippy moisturizing cream has long been a goal of the industry, but it's incompatible with the oil used to moisturize.