Caffeinated Soap – $6.99
If that Venti cup of coffee from Starbucks doesn’t give you a strong enough jolt, then you might want to try showering with caffeinated soap. Each 4 oz. bar contains 200mg of caffeine per shower, which gives you about 12 showers per bar. The cost per shower comes out to around $0.60, which is more than twice as cheap as a small cup of coffee from Peets or Starbucks. Skeptical about the effectiveness of caffeine absorbing into your skin? This article and test might shed some light.
Caffeinated Soap available at Amazon.