{
"subject": "the person in the uploaded photo, 20 years younger, in the SAME photo. They have to still be THIS person, beyond any doubt: the same face shape, the same nose, the same eyebrows, the same eye color, the same ears, the same smile and the same marks that identify them. The only thing that changes is the age, and it has to show: a smooth forehead, without the horizontal lines; almost no crow's feet when smiling, just a slight crease at the corners of the eyes; no bags under the eyes; fuller cheeks; a more defined jawline and neck; the hair and beard in the color they had before going gray, fuller, but with the SAME hairline at the temples. Do not make the person better-looking, thinner or model-like, and do not swap any feature. In the example, a 52-year-old man who appears at 32: light brown skin, short dark brown hair, full on top with a slightly receding hairline, a short beard that is dark brown all over, thick dark eyebrows, dark brown eyes, a wide nose, slightly protruding ears and a visible gap between his two front teeth, which shows because he smiles showing his teeth",
"wardrobe": "the SAME clothes as in the uploaded photo; in the example, a plain navy blue cotton piqué polo shirt, with the collar open and one gray button showing",
"action": "the same pose as in the uploaded photo: a selfie taken at arm's length, with the arm coming in from the bottom left corner; he looks straight at the camera with a big smile, his head slightly tilted",
"scene": "the SAME place as in the uploaded photo, with the same objects in the same spots; in the example, an apartment balcony in daytime: a glass railing and light-colored buildings in the background on the left, a broad-leaved plant on the left edge, potted plants and a hanging plant on the right, the concrete ceiling at the top right and the dark frame of a glass door on the right edge",
"composition": "vertical in a 3:4 ratio, the SAME framing as in the uploaded photo, with the camera at the SAME distance: in the example, the face fills almost half the width of the frame, from ~28% to ~77%, with both ears fully visible and slightly right of center; the hair starts at ~7% of the height, the eyes sit at ~34%, the smile at ~50% and the chin at ~63%; the shoulders and the chest with the shirt fill the lower part down to the edge, and the selfie arm barely shows",
"camera": "a phone's front camera, held at arm's length slightly above eye level and from the front, a wide-angle selfie lens with slight distortion at the edges; a sharp face and a slightly blurred background",
"lighting": "the SAME light as in the uploaded photo; in the example, bright natural daylight coming from the front and a little from the left, a well-lit face, soft shadows under the chin and a bright sky in the background",
"color_palette": "the colors of the uploaded photo; in the example, the navy blue of the shirt, the green of the plants, the white and light gray of the buildings and the ceiling, warm light brown skin and a very pale blue sky",
"style": "a REAL phone photo, candid, with no filter and no retouching, with skin that has natural pores, texture and shine, like a selfie taken 20 years earlier; not a studio portrait, not an illustration and not a rejuvenating app effect",
"details": "three proofs that it is the same person and the same photo: the facial features are identical (in the example, the wide nose, the thick eyebrows, the slightly protruding ears and the gap between the front teeth); the clothes, the place, the light and the framing are those of the uploaded photo; and the age shows in the smooth forehead, in the eyes without deep crow's feet and in the hair and beard without a single white strand",
"negative_prompt": "different person, swapped features, perfect straight teeth, gap between the teeth closed, slimmed nose, thinner face, model face, filter-smooth skin, plastic skin, forehead wrinkles, deep crow's feet, gray hair, gray beard, child, teenager, different clothes, different setting, different framing, small face in the frame, studio lighting, makeup, text, logos, watermark, resemblance to a real person, AI artifacts"
}
How to use
AI that makes photos younger tends to miss one of two ways: you come back only ten years younger, because it removes few wrinkles to avoid touching the face, or you get an ad model who is not you. This prompt starts from your photo and returns the same photo, same clothes, same place and same framing, with you 20 years younger and the same face. Works in ChatGPT, Gemini and NanoBanana.
1. Upload a sharp photo of yourself, facing the camera and in good light (a selfie works).
2. In the `subject`, swap the example's description for yours, naming the feature that identifies you most.
3. If you want a different gap, change the 20 years to 10, 15 or 30.
4. Do not touch the list of what changes with age or the `negative_prompt`.
5. If the difference came out too small, ask again and name the forehead, the eyes and the hair.
Tip: put today's photo next to the generated one; that is the format that gets shared most in family group chats.
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