diff --git a/src/cli.ts b/src/cli.ts
index b643e34..2f228ef 100644
--- a/src/cli.ts
+++ b/src/cli.ts
@@ -5,2 +5,4 @@
 
+import * as path from 'node:path';
+import { createRequire } from 'node:module';
 import './bootstrap-cli.js'; // this MUST come before other imports as it changes global state
@@ -10,3 +12,5 @@ import { resolveNLSConfiguration } from './vs/base/node/nls.js';
 import { product } from './bootstrap-meta.js';
+import { getUserDataPath } from './vs/platform/environment/node/userDataPath.js';
 
+const require = createRequire(import.meta.url);
 // NLS
@@ -21,2 +25,4 @@ process.env['VSCODE_CLI'] = '1';
 
+resolveUserProduct();
+
 // Bootstrap ESM
@@ -26 +32,14 @@ await bootstrapESM();
 await import('./vs/code/node/cli.js');
+
+function resolveUserProduct() {
+	const userDataPath = getUserDataPath({_:[]}, product.nameShort ?? 'code-oss-dev');
+	const userProductPath = path.join(userDataPath, 'product.json');
+
+	try {
+		// Assign the product configuration to the global scope
+		const productJson = require(userProductPath);
+
+		globalThis._VSCODE_USER_PRODUCT_JSON = productJson;
+	} catch (ex) {
+	}
+}
\ No newline at end of file
diff --git a/src/main.ts b/src/main.ts
index 7b7e1da..f07b015 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -8,2 +8,3 @@ import * as fs from 'original-fs';
 import * as os from 'node:os';
+import { createRequire } from 'node:module';
 import { performance } from 'node:perf_hooks';
@@ -22,2 +23,4 @@ import { NativeParsedArgs } from './vs/platform/environment/common/argv.js';
 
+const require = createRequire(import.meta.url);
+
 perf.mark('code/didStartMain');
@@ -109,2 +112,14 @@ registerListeners();
 
+function resolveUserProduct() {
+	const userProductPath = path.join(userDataPath, 'product.json');
+
+	try {
+		// Assign the product configuration to the global scope
+		const productJson = require(userProductPath);
+
+		globalThis._VSCODE_USER_PRODUCT_JSON = productJson;
+	} catch (ex) {
+	}
+}
+
 /**
@@ -205,2 +220,3 @@ async function startup(codeCachePath: string | undefined, nlsConfig: INLSConfigu
 	process.env['VSCODE_CODE_CACHE_PATH'] = codeCachePath || '';
+	resolveUserProduct();
 
diff --git a/src/typings/vscode-globals-product.d.ts b/src/typings/vscode-globals-product.d.ts
index 2cd632e..dbb25e3 100644
--- a/src/typings/vscode-globals-product.d.ts
+++ b/src/typings/vscode-globals-product.d.ts
@@ -29,2 +29,4 @@ declare global {
 
+	var _VSCODE_USER_PRODUCT_JSON: Record<string, any>;
+
 }
diff --git a/src/vs/platform/product/common/product.ts b/src/vs/platform/product/common/product.ts
index 6f093e9..b63af55 100644
--- a/src/vs/platform/product/common/product.ts
+++ b/src/vs/platform/product/common/product.ts
@@ -31,2 +31,25 @@ else if (globalThis._VSCODE_PRODUCT_JSON && globalThis._VSCODE_PACKAGE_JSON) {
 
+	// Merge user-customized product.json
+	try {
+		const merge = (...objects: any[]) =>
+			objects.reduce((result, current) => {
+				Object.keys(current).forEach((key) => {
+					if (Array.isArray(result[key]) && Array.isArray(current[key])) {
+						result[key] = current[key];
+					} else if (typeof result[key] === 'object' && typeof current[key] === 'object') {
+						result[key] = merge(result[key], current[key]);
+					} else {
+						result[key] = current[key];
+					}
+				});
+
+				return result;
+			}, {}) as any;
+
+		const userProduct = globalThis._VSCODE_USER_PRODUCT_JSON || {};
+
+		product = merge(product, userProduct);
+	} catch (ex) {
+	}
+
 	// Running out of sources