Don't know the exact date on this one, but here's Popeye (Jack Mercer), along with Olive Oyl (Mae Questel) and Brutus (Jackson Beck) shilling for Soaky soap bottles. Not pictured: Olive would later get her own bottle.
Animated by one of the studios working with King Features. I don't remember seeing any of the Soaky bottles when I was younger, but it turns out Soaky was another brand produced by Colgate-Palmolive. Hmm.