Weleda Sea Buckthorn Vitalizing Hand Cream The power of organic sea buckthorn oil is truly unleashed in Sea Buckthorn Vitalizing Hand Cream. Almost immediately after application, rough, dehydrated hands feel soft and supple, and they stay that way for a long time. For heavily stressed hands with flaky skin, sea buckthorn oil stimulates the repair process, so the skin quickly recovers and feels smooth.