At AStech Nail Academy we believe, after testing various products and systems, that the NOUVEAU NAIL ADVANCED RETENTION ACRYLIC LIQUID SYSTEM is the most advanced formula liquid and powder system available today. Formulated with UVA and UVB inhibitors to help prevent yellowing. The Advanced Formula Acrylic Powder is a unique formula that combines the adhesion properties of a hard polymer with the flexibility of a soft polymer. Together they create beautiful acrylic nails that boast truly superior adhesion and durability.