Certain shampoos and treatments are formulated to block dihydrotestosterone (DHT), a sex hormone that plays a role in hair loss. These DHT blockers may help prevent hair loss. We combed through (pun ...

Your phone already has powerful spam protection tools—you just need to activate them. We show you how on iPhone and Android. I review privacy tools like hardware ...

Apple, Google, and Microsoft all offer free parental control apps or settings to help you keep your kids safer online. We walk you through the benefits and drawbacks of each. I review privacy tools ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Toby Walters is a financial writer, investor, and lifelong learner. He has a passion for ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Suzanne is a content marketer, writer, and ...