ProStrong Maximum Strength

ProStrong's Maximum Strength collection includes a fluoride nail strengthener and a calcium supplement. The fluoride nail strengthener, with added Vitamin B Complex, penetrates nails and strengthens them. The calcium supplement increases nail calcium by up to 78% when used with the fluoride treatment.

• The description claims that the fluoride nail strengthener increases calcium in nails by 78% on average.
• The description claims that the calcium supplement increases nail calcium up to 78% on average in four weeks.