Whitening Ingredient Speed of Results

Based on the information available from the product descriptions, the speed at which whitening ingredients show results can vary depending on the individual's skin and the specific formulation used.

However, the descriptions for some of the ingredients provide an indication of the expected timeframe:

• Activated Resorcinol™ (4-Butyl Resorcinol): The manufacturer's experimental results suggest that it takes at least 4 weeks of continuous use to start seeing results.
• MSH White™ (Undecylenoyl phenylalanine): The usage instructions also indicate using it for at least 4 consecutive weeks.

The descriptions for Phenylethyl Resorcinol (e.q. SymWhite 377) and 4MSK (Potassium Methoxysalicylate) do not specify a typical timeframe for seeing initial results.

Therefore, based on the provided product information, both Activated Resorcinol™ and MSH White™ suggest a minimum of 4 weeks for initial results. It's important to remember that individual results may vary.