La Roche-Posay Effaclar Duo is an acne spot treatment that is formulated to target all stages of the pimple lifecycle. It is a non-greasy cream that can be used as a full-face or spot treatment to help reduce acne and blackheads. The key ingredients in Effaclar Duo include:

• Benzoyl Peroxide: This is an acne medication that penetrates pores to clear blemishes. Effaclar Duo contains 5.5% benzoyl peroxide in a unique micronized format formulated to help reduce irritation.

• Salicylic Acid: This is a dermatological ingredient that is included in some formulations of Effaclar Duo. It helps to exfoliate the skin and unclog pores.

Other ingredients in Effaclar Duo include water, isostearyl alcohol, glycerin, pentylene glycol, silica, carbomer, capryloyl salicylic acid, potassium hydroxide, tocopherol, and more.

Positive aspects of Effaclar Duo include its effectiveness in reducing acne and blackheads, and its non-greasy, fast-absorbing texture. Negative aspects may include potential irritation from the benzoyl peroxide and salicylic acid, and the fact that it may not work for everyone.