Remove the outer skin from the papaya, using a sharp knife or peeler. Scoop out the seeds; discard the seeds and skin.
Cut the papaya into chunks and place the chunks in a food processor. Blend the papaya for 30 seconds.
Line a strainer with gauze and place a bowl beneath it. Spoon the papaya into the strainer and pushing the papaya through the gauze. Save the juice.
Combine the gelatin and the mineral water in a saucepan. Heat up the mixture on low, stirring constantly. Once the gelatin dissolves, pour the mixture into the bowl with the papaya juice.
Place the bowl in the refrigerator and allow it to cool for 25 minutes. Stir the mixture. It should be thick, not runny.
Pull your hair back with a hair band. Sit comfortably in front of a mirror.
Spread the papaya paste on your clean face, using your fingers or a small spatula. Rest without disturbing your face for 20 minutes.
Peel off the mask, starting at your chin. Rinse away the excess papaya mixture with warm water and a cloth. Pat your skin dry with a soft towel.