diff --git a/frontend/src/lib/api.ts b/frontend/src/lib/api.ts
index cda76e5..454073c 100644
--- a/frontend/src/lib/api.ts
+++ b/frontend/src/lib/api.ts
@@ -268,7 +268,8 @@ export interface SkinPhotoAnalysisResponse {
 export async function analyzeSkinPhotos(files: File[]): Promise<SkinPhotoAnalysisResponse> {
 	const body = new FormData();
 	for (const file of files) body.append('photos', file);
-	const res = await fetch(`${PUBLIC_API_BASE}/skincare/analyze-photos`, { method: 'POST', body });
+	const base = browser ? '/api' : PUBLIC_API_BASE;
+	const res = await fetch(`${base}/skincare/analyze-photos`, { method: 'POST', body });
 	if (!res.ok) {
 		const detail = await res.json().catch(() => ({ detail: res.statusText }));
 		throw new Error(detail?.detail ?? res.statusText);