That claim is misleading. Baking soda cream has not been shown to remove wrinkles or reliably fade age spots, and putting baking soda on facial skin can cause irritation because it is quite alkaline.
If you want a simple bedtime routine for wrinkles and dark spots:
For wrinkles: use a moisturizer and, if tolerated, a retinoid such as retinol.
For dark spots: use broad-spectrum SPF 30+ every day; ingredients such as vitamin C, azelaic acid, or niacinamide may help.
Avoid DIY baking-soda treatments, lemon juice, and abrasive scrubs, which can irritate skin and potentially make pigmentation worse.
If you want, I can also give you a safe homemade-style night cream recipe using gentle ingredients.
