Disclaimer: This is a sponsored post. I was provided with free product in exchange for my unbiased review.
Every once in a while, I encounter a skincare line which impresses me so much that I want to praise it from a mountaintop. This is definitely the case with One Theory Complete Collection, which I recently got a chance to use and review. You can see in the YouTube video review which I have shared at the top of this post that, though I am not standing on a mountaintop, I am definitely a fan of this skincare line, which is paraben-free, fragrance-free, cruelty-free, and is suitable for all skin types, even sensitive skin like mine.
The Complete Collection includes the following products:
Morning Beat™ Vitamin C Serum | 1 fl oz
Millionaire Sugar™ Retinol Serum | 1 fl oz
HydraMatrix Amino Tea™ Peptide Serum | 1 fl oz
La Rituelle™ Kojic Acid & Green Tea Replenishing Moisturizer | 1.7 oz
One Theory recommends using the following products in sequence for your morning ritual after cleansing and toning your skin:
Morning Glow Routine:
Morning Beat™ Vitamin C Serum
HydraMatrix Amino Tea™ Peptide Serum
La Rituelle™ Kojic Acid & Green Tea Replenishing Moisturizer
In the evening, you will use the following products in sequence:
Night Flow Routine:
Millionaire Sugar™ Retinol Serum
HydraMatrix Amino Tea™ Peptide Serum
La Rituelle™ Kojic Acid & Green Tea Replenishing Moisturizer

One Theory Complete Collection
Morning Beat™ Vitamin C Serum:
Probably my favorite aspect of this serum is the fact that it features the more stable magnesium ascorbyl phosphate molecule as its Vitamin C antioxidant. This particular form has both hydrating and calming properties, making it ideal for all skin types. Vitamin C is terrific for combating environmental skin stressors, and it brightens skin beautifully. When I apply this onto my skin, I get wonderful hydration, great absorption, and a glowy tone.
Millionaire Sugar™ Retinol Serum:
Though I am not the biggest fan of retinol (I just don’t like walking around with flaking skin), I do honor its ability to increase cell turnover and refine the skin, reducing the appearance of fine lines and wrinkles. Millionaire Sugar™ features a slow release, active 1% microencapsulated form of Retin-A which prevents the retinol from breaking down before it penetrates your skin. The result is improved skin texture and improved skin renewal.
Imagine my surprise when I developed absolutely NO flakiness or peeling from this product. My skin was already more radiant after using this product for a few nights. I am in love with this retinol product, and look forward to rejuvenating my skin each night as I sleep with this wonderful serum on my face.
HydraMatrix Amino Tea™ Peptide Serum:
This product boasts a collagen-boosting peptide known as Matrixyl 3000® which is phenomenal for the area around my mouth and eyes, because it just smooths out fine lines and rough skin patches (which I developed from a fractional laser procedure in November of last year). The addition of cucumber and green tea make this gel incredibly soothing, something my skin really appreciates. It’s incredible how this serum seems to normalize skin, balancing out redness, dry spots, and oily spots (yes, I still have some oiliness in my T-zone even though I am over the half-century mark).
La Rituelle™ Kojic Acid & Green Tea Replenishing Moisturizer:
Whenever I find a great moisturizer, I get almost giddy with excitement, because they honestly are difficult to find. From the first time I ever used La Rituelle™, I was completely hooked. It nourishes my parched skin without sending it into an oily mess, absorbs completely, and imparts such a smooth, amazing finish to my skin that I often don’t bother using finishing powder (I don’t use foundation, just finishing powder to combat shine).
La Rituelle™ provides a gentle barrier to moisture loss and works beautifully with all three facial serums in the One Theory line. Kojic acid, Willow Bark extract, Green Tea, and Ginseng are combined with a bit of glycolic acid in a Hyaluronic Acid base to create a magical moisturizer which has become a personal favorite.
I never recommend products which I do not personally use, so when I say that I am over the moon with the One Theory skincare line, I truly mean it. My skin is luminous, hydrated, and happy with all four products in the One Theory line. I am also so excited to try their cleanser and toner when they become available, because I have no doubt that they will be outstanding!
To order the One Theory Complete Collection, just click on the link below: