The line, which will be launched next month, includes soothing balms, face masks and facial scrubs.
The company's existing range of shaving foams, introduced last year as a trial for the brand, will be revamped to enhance its appeal in the premium market.
The addition of the skincare line more than doubles the number of Real Shaving products to eight.
The Real Shaving Company range was launched exclusively through Tesco, but is now also distributed in Boots. It will compete with premium rivals including King of Shaves and Nivea's For Men.
Creightons, which manufactures own-brand lines for retailers as well as products for barbers, positions itself as a supplier of traditional male-grooming materials.