There are plenty of equipment like powder chalk, grip tape or gloves for a better grip in your workout. It's easy to prevent sweaty hands and regain a secure grip. The grip strength can be better used with these simple tools for the calisthenics workout and saves unnecessary slipping during e.g. pull-ups or muscle ups.
In the gym, liquid chalk is most suitable, because unlike magnesia powder, it is allowed in most gyms due to the low dust formation. Due to the alcohol content, there is also a disinfection effect for your hands, which speaks for hygiene in the gym. Gloves are also a practical and useful option in the gym for a better grip for calisthenics.
For outdoor workouts, especially freestyle calisthenics, powder or block chalk is often used, which have less grip on the bar and are therefore better for dynamic movements. Outdoors, the dusting of these products is usually not a nuisance.
In home workouts, the same recommendations apply as in the gym, but here, if you have your own equipment, grip tape is also an interesting alternative for permanently better grip on parallettes, rings, pull-up bar & dip bars. Simply wrap it around, benefit from better grip during your workout, and if desired, remove it in seconds without leaving any residue.