Mascara asks for more than any other product in a makeup bag. You have to hold a slim wand in a pinch grip, bring it to within a few millimeters of your own eye, see clearly enough at close range to place it at the lash root, and hold it steady while you wiggle. Then, at the end of the day, you have to remove it from the thinnest skin on your face without pulling at lashes that are already loose.
That is four separate demands — grip, precision, close vision and a steady hand — plus a removal problem, and every one of them is a common difficulty after 70. Which is why this is the product people give up on first, and why the honest answer involves changing the product, the tool and the setup rather than just practicing more.
Removal is the half that gets ignored and it is the half with the biggest win. A tubing formula slides off with warm water and gentle pressure: no solvent, no cotton pad dragged across the lid, no rubbing. A waterproof formula needs an oil or solvent plus mechanical work, every night, millimeters from the eye. On a thinning lash line that friction costs lashes, and it is the single most avoidable cost in this whole section.
For application, bracing beats practice. A hand held in mid-air shakes; a hand resting on something does not. Resting your elbow on a table and your little finger on your cheekbone changes what is physically possible, and it is free. The commercial version of the same principle is an applicator designed to brace against the face and carry its own weight — which is what GUIDE Beauty's range is built on, founded by a makeup artist who lost dexterity to Parkinson's.
And the practical compromise worth naming: upper lashes only. Lower lashes demand the most precision for the least benefit, and skipping them removes a third of the difficulty while also removing the most common cause of a smudge under the eye.