Offer Description:
The Olay site almost always has one or more free offers and a couple discount offers on their site. I've listed both the US and Canadian free offer pages. The US site is now offering a free sample of Olay Definity Intense Hydrating Cream and the Canadian site is offering a free sample of Olay Regenerist.
How to get the free offers:
If you are in the United States visit the Coupons, Samples, and Offers page. If you live in Canada visit the News and Samples page. Choose an offer and fill out the corresponding form.
Offer Availability:
The respective offers are available in the US or Canada. Procter & Gamble is very good about following through with their offers, so you can be pretty sure of receiving the samples.
What are risks in requesting these free offers?:
Procter & Gamble has a very good privacy policy and I would not worry about getting spam or unwanted mailings from them. You can still use a junk email account if you wish.