These specially formulated serums are designed for use with hydrogen oxygen facial machines and other compatible skincare equipment. They can be applied individually or in combination based on treatment needs. AS1 Solution ? Plant-extracted formula that supports gentle exfoliation and helps cleanse impurities, leaving the skin looking refreshed and bright. SA2 Solution ? Helps calm and soothe the skin while supporting the removal of surface buildup for a more even appearance. AO3 Solution ? Promotes the look of healthier skin by providing hydration and essential nutrients to support skin softness and resilience. Multi-Function Use These serums help moisturize, nourish, and support the skin?s natural barrier. They are suitable for a wide range of hydra facial devices and treatments, enhancing visible results without invasive methods. Each 400ml bottle provides an average of 10 treatments. Ideal for professional skin care settings or at-home beauty routines All facial serum sales on this website are final. Due to the nature of these components, we do not accept returns, exchanges, or refunds for cavitation handles. It is the customer?s responsibility to verify compatibility with their existing equipment before making a purchase. We are not liable for any issues resulting from incompatibility with non-affiliated machines or devices. Package Contents 1x AS1 1x A03 1x AS2