Yes. All MOOD ingredients are clean, clinic- or therapeutic-grade for optimal effect.
There is a difference between clean and all natural. Although MOOD focuses on including natural, plant-derived ingredients as much as is effective to produce results, some ingredients such as Retinaldehyde (think retinol but 4X stronger and works up to 11X faster) in ourILLUMINATE Skin Brightening Serum are synthesized. This classifies it a clean ingredient but not fully natural.
You can learn more about MOOD Skin Care's star ingredients here.