The engine room was noisy, wet, greasy, oily and steamy. People with acne are often advised to use astringents if they have oily skin. Skin tonics are suitable for use on normal, combination, and oily skin. The main hormonal driver of oily sebum production in the skin is dihydrotestosterone. The meat is white, flaky and somewhat oily. "C. acnes" also provokes skin inflammation by altering the fatty composition of oily sebum. Poultry have a gland called the preen gland that secrets an oily salty tasting substances. Instead, its carapace is covered by skin and oily flesh. Fish oil is oil derived from the tissues of oily fish. In those with oily skin, a water-based product is often preferred. Savji dishes are very spicy and oily. Pregnancy can increase androgen levels, and consequently, oily sebum synthesis. It is useful for marking on wet or oily surfaces. The pulp is bright orange, highly aromatic, somewhat oily, and quite fibrous. Feces are often yellow-gray in color with an oily texture.