Essential Six Day Kit | RATIONALE
Essential Six Day Kit
Delivering threefold daily protection with Steps 1 to 3 of the RATIONALE Essential Six Day ritual.
Skin Conditions

Essential Six Day Kit

Daytime radiance begins with an immune booster to restore luminosity and target pigmentation. Follow with a potent combination of Antioxidant Vitamins A, C + E to firm and refine. Finish with a super hydrating SPF15 day cream, starring Skin Identical Zinc and Melanin. This Day Kit consists of Steps 1-3 of the RATIONALE Essential Six system.

  • Immunologist Serum promises skin clarity and calmness by boosting the skin's immune responses and intercellular communication.

  • Super Antioxidant Serum rejuvenates, re-firms and boosts skin luminosity with Skin Identical Antioxidants and anti-glycation actives.

  • PhotoDynamic Day Cream SPF15 harnesses the power of light to rejuvenate the skin, boost Vitamin D levels and deliver an immediate dewy luminosity.

  1. Smooth one to two drops of Immunologist Serum over face, neck, décolletage and back of hands each morning.

  2. Follow with one to two drops of Super Antioxidant Serum.

  3. Finish with PhotoDynamic Day Cream SPF15 for maximum protection and rejuvenation.

If you are unsure about how any of these products fit in to your RATIONALE skincare routine, our expert Team of Online Skin Consultants is here to help.

Active Ingredients


Niacinamide (Vitamin B3)

  • Boosts skin immunity
  • Fortifies barrier function
  • Regulates sebum production
  • Fades and prevents hyperpigmentation
  • Calms redness

Australian SolarProtective Botanicals

  • Protects against solar induced DNA damage
  • Enhances solar resilience
  • Stimulates healthy collagen production
  • Strengthens capillaries + barrier function

Amino Acids (Acetyl Glutamyl Heptapetide-1)

  • Boosts skin immunity 

Adenosine Triphosphate

  • Provides vital source of cellular energy

Ascorbyl Glucoside (Vitamin C) 

  • Stable form of Vitamin C
  • Brightens hyperpigmentation
  • Prevents damage to skin immune cells


Vitamin C (Ascorbyl Tetraisopalmitate)

  • Potent, stable form of Vitamin C 
  • Stimulates collagen synthesis 
  • Brightens hyperpigmentation
  • Re-firms and rejuvenates skin 

Vitamin A

  • Stimulates collagen synthesis  
  • Protection of DNA when absorbing UVR 
  • Encourages healthy skin cell rejuvenation 

Vitamin E (Tocopherols + Tocotrienols)

  • Enhances solar protection
  • Blocks the formation of ROS (Reactive Oxygen Species)
  • Reduces visible signs of UV damage
  • Helps fade hyperpigmentation 
  • Augments Natural Moisturising Factors within skin 

Ubiquinone (Coenzyme Q10)

  • Supports cellular energy production
  • Neutralises superoxide radicals
  • Augments + protects intercellular lipids


  • Potent Antioxidant
  • Prevents the formation of free radicals

Superoxide Dismutase

  • Deactivates damaging superoxide radicals

Australian SolarProtective Botanicals

  • Enhances skin's natural solar defence mechanisms 
  • Prevents solar-induced DNA damage 
  • Stimulates healthy collagen production 
  • Strengthens barrier function 


Zinc Oxide

  • Skin nutrient and sunscreen found naturally in the body
  • Absorbs and scatters UV radiation
  • Rejuvenating effect on skin connective tissue
  • Powerful Anti-inflammatory


  • Sunscreen found naturally in the body
  • Absorb 99.9% UVR and transforms it to heat which rejuvenates skin 
  • Potent protector against UVR induced DNA damage

Vitamin D Pre-Cursor

  • Precursor to Vitamin D found throughout the epidermis 
  • Converts to Vitamin D within the skin
  • Strengthens barrier function and skin resilience 

Acetyl Tetrapeptide-22

  • SolarProtective Peptide
  • Stimulates synthesis of Heat Shock Protein-70
  • HSP-70 protect cells from thermal or oxidative stress

Antioxidant Vitamins (A, B, C, D, E) 

  • Firms and rejuvenates 
  • Provides Antioxidant protection against free radical damage 
  • Converts UV + Visible Light to low energy coherent light

Australian SolarProtective Botanicals

  • Boosts the skin's natural solar defence mechanisms
  • Protects against free radicals caused by the sun