Magic Razorless Cream Shave Extra Strength 170 g: With a light fresh scent the razorless cream shave works in 4 minutes and last for 4 days. Extra strength formula for coarse beards. Before using Magic Cream Shave for the first time, perform the sensitivity test. Ensure you wait at least 36 hours after using a razor or depilatory product before doing this test. Apply cream to a quarter size area of the beard. Wait 4 minutes. Remove. Do not scrape. Rinse area thoroughly. After 24 hours, if there is no sign of irritation or redness, continue with the rest of the beard.