Acne treatment trend under scrutiny

A popular Instagram video has sparked debate about the effectiveness of using rice to treat acne scars, with dermatologist Dr. Marie Jourdan addressing the trend in a post that has received 2.5 million likes. According to Dr. Jourdan, applying white rice to the face has not demonstrated effectiveness in erasing real acne scars.

White rice versus whole grain rice

The video highlights the use of white rice, which is not whole grain rice, as the bran has been removed. This distinction is important, as it separates discussions about compounds in whole grain rice from the simple application of white rice paste on the skin. What remains in white rice is mainly starch.

Rice starch and skin comfort

Dr. Jourdan describes starch as a large molecule that likes water, capable of giving the impression of smoother or more comfortable skin on the surface. This idea is not absurd, as an old study evaluated rice starch as a bath additive in contexts of irritated or atopic skin, with a favorable effect on the skin's barrier function.

Comfort versus scar removal

However, a skin comfort effect does not mean an anti-scar effect. Skin that pulls less, appears softer or better hydrated after a home treatment does not necessarily mean the skin's texture has been repaired. The immediate sensation does not prove that the dermis, the deep layer affected by certain acne scars, has been modified.

Popularity does not equal proof

Dr. Jourdan emphasizes that virality is not proof of effectiveness. Millions of likes can make a gesture visible, but they do not demonstrate its actual efficacy.