4pc Smile Direct Whitening with Light

These bright on pens contain the same enamel-safe whitening agent used by dentists – for less than half the cost. The no-mess brush applicator lets you paint the gel directly onto your teeth, and the patent-pending 20-LED accelerator light boosts its whitening power. Use for just a week – once in the morning and once in the evening – and enjoy whiter teeth for 6 months.

• 4 pens for 6 months of whitening.
• 1 full week treatment.
• Results last up to 6 months.
• Up to 9 shades whiter in just one week¹
  
• Same enamel-safe whitening agent used by dentists.
  
• Whitens with low to no sensitivity.
• Helps remove years of tough stains.
• Both iPhone and Android users require mating with the chipset provided in the case. It is recommended that the phone remains on while in use.