Updated: Apr 9, 2019
This is an old video but it gives the foundations on how you can remove braids or twists without damaging your hair.
The main thing you need to ensure is that you use a lot of moisture as that encourages slippage which removes tangles and shed hair from the period your protective style has been in.
Disclaimer: I know oil and water don't mix, so I did a lot of shaking to get the combination on my hair. You can choose a different mix such as conditioner and water.