Must the price of the soap and detergents used in masturbation be repaid without the parents' permission?

We pray that Allah accepts your repentance and rewards you for it, and for your eagerness to restore rights. Using soap for masturbation is an unusual use for it, an transgression, and an unjustified waste. However, nothing is required from it due to the small amount consumed. You can gently ask your family for forgiveness.