To remove the detergent stains on your clothing, try soaking them in undiluted white vinegar until the spots disappear - at least 15 minutes, but no more than 30. (Vinegar is excellent at dissolving soap residue).
Launder as usual, and don´t worry, any vinegar smell will wash right out. If this doesn´t work, you could try wetting the stains, and rubbing them with a liquid dish detergent designed to remove grease.