How do I take Rosa damascena? Take 20 drops of the Swiss Herbal Remedies rose tincture three times daily before meals. Mix with a little water. For Rosa aromatic water take 50 drops in a little cold water three times daily. It can be applied liberally as a wash to the skin. Rosa cream can be applied liberally to the skin. Rosa damascena is safe for all general purposes & does not interact with any drugs or hormonal medication. Tincture specifications. Our Rosa tincture is a distilled & infused tincture of fresh organic rose petals 11 25%alcohol