EVENTS
• Stop by Bliss on “wax day” to see hair-removal demos. Various hours and locations. More details are available at blissworld.com.

• Attend the men’s skin-care happy hour at Dermalogica featuring complimentary treatments, refreshments, samples, and special discounts. Customers who bring a friend will receive 20 percent off all products and a complimentary travel bag. 110 Grand St., nr. Mercer St. (212-219-9800); 6–9. E-mail soho@dermalogica.com to RSVP.

• Enjoy a complimentary facial with any beauty appointment at Sonya Dakar at Barneys. Customers will also receive a gift with a purchase of $175 or more. 660 Madison Ave., nr. 61st St. (212-826-8900); 11–6. Call 212-833-2608 to make an appointment.

• Pick up a free gift (if you're one of the first 100 attendees) at BITE Beauty's event at Sephore in Times Square. There'll be a D.J., express "mini-makeovers" and even a chemist explaining how BITE's lipsticks are made. 1500 Broadway, nr. 43rd St., (212-944-6789); 1–7.

SALES
STARTING TOMORROW
• Clothing and accessories by Pleasure Principle, Hyden Yoo, Unif, and more are up to 85 percent off in a sample sale at OAK's Williamsburg store. Through 4/17. 208 N. 8th St., nr. Driggs Ave., (718-782-0521); F–S (11–8), Su (11–7).

• Gowns and accessories for brides and bridesmaids are reduced up to 80 percent, with prices from just $50, at the Simple Silhouettes showroom's sample sale. Through 4/16. 547 Broadway, 2nd fl., nr. Prince St., (212-219-2223); F (10–6), S (10–5).

• Union Square Optical celebrates their 26th anniversary with a sale: 50 percent off all frames in their boutique. Through 5/9. 9 W. 14th St., nr. Fifth Ave., (212-242-0314); M–F (10–7), S (10–6).

SALES
ENDING TOMORROW
• Women's dresses, suits, tops, and pants from the current and past seasons are 30 to 70 percent off at the BGN Paris sample sale. Sale items include linen dresses, silk-chiffon tops, skirts, wool and leather jackets, tailored pants, and more. 202 W. 40th St., nr. Seventh Ave. (212-278-8686); T–F (10–6).

• With proceeds benefiting the Japan Society's Earthquake Relief Fund, there's up to 75 percent off of Charlotte Ronson's womenswear and shoes at this special sample sale. 1071 Ave. of the Americas, Ste. 301, nr. 41st St.; 10–7.