Lavender-Well known for its calming properties, lavender is among the best oils to use in the bath as it is known to have some anti-inflammatory and antiseptic properties.It is well known that when oil is mixed with water, it has an ability to penetrate deep into skin tissue and provide rejuvenation.Geranium-For an incredible aroma that is sure to make your bath a pleasurable experience, use Geranium. As an added benefit, the oil may improve your skin texture and makes skin radiant.It is well known that when oil is mixed with water, it has an ability to penetrate deep into skin tissue and provide rejuvenation.