Instructions:

Cut the red onion into thin slices.
Place the onion slices in a bowl and cover them with apple cider vinegar.
Cover the bowl and let the solution sit for a few hours.
Take one slice of the soaked onion and rub it gently on the affected area. Leave the onion juice on your skin for a few minutes.
Rinse your skin with cold water and follow up with a moisturizer.
You can store remaining slices in fridge

DIY #2: Onion Juice with Apple Cider Vinegar

Ingredients:

Equal parts apple cider vinegar and water
Onion juice
Instructions:

Combine equal parts apple cider vinegar and water in a container. Add a small amount of onion juice to the mixture.
Apply the solution to your dark patches using a cotton pad or your fingertips.
Leave it on for two to three minutes.
Rinse your skin with plain water and apply a moisturizer.
These natural remedies can help fade dark spots and age spots over time. Incorporate them into your skincare routine for brighter, more even-toned skin