To make Horsetail infusion, steep 2 teaspoons of dried herb in a boiling cup of water for 10 minutes. Let it cool down and soak the nails for about 20 minutes. After 20 minutes of soaking, pat dry the nails and apply a mixture of equal parts of lukewarm extra virgin olive oil and lemon juice thoroughly. Wrap your fingers with fine cotton cloth for overnight. Repeat this remedy for at least 3-4 times a week.