Essential Six Kit | RATIONALE
Essential Six Kit
Luminous skin in just six steps. For all skin types.
Skin Conditions

Essential Six Kit

The RATIONALE Essential Six harnesses revolutionary Skin Identical technology to restore skin radiance through the prevention and repair of solar damage. Including three morning products for complete daytime protection and three evening formulations for optimal overnight repair, the Essential Six perfectly synchronises with the skin’s physiology to deliver all the essential Vitamins, Minerals, Lipids and Proteins needed for skin vitality and resilience. Skin health and luminosity elevated.

  • 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.

  • ProCeramide Cleanser simultaneously boosts skin hydration, firmness and softness while cleansing.

  • Catalyst Serum instantly boosts skin luminosity, firmness, hydration and clarity.

  • DNA Night Cream rejuvenates and repairs, nourishes and firms. 



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

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

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


  • Lather a small amount of ProCeramide Cleanser over face, neck and décolletage.

  • Rinse thoroughly with tepid water. A second cleanse may be required if heavy makeup is worn.

  • Follow with one to two drops of Catalyst Serum.

  • Finish with an application of DNA Night Cream for optimal nourishment and repair.

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 


Ceramides + Lipids 

  • Elicits natural cleansing mechanisms within the skin
  • Increases hydration 
  • Fortifies barrier function 


  • Emulsifies oil, dirt and makeup
  • Stimulates ceramide synthesis

Hyaluronic Acid

  • Boosts skin hydration dramatically

Bitter + Sweet Orange Oil

  • Natural cleansing agents anti-bacterial properties 

Australian SolarRepair Botanicals

  • Enhances solar repair
  • Strengthens barrier function
  • Anti-inflammatory properties 
  • Potent Antioxidant properties


Alpha Hydroxy Acids (Lactic, Citric + Malic Acid) 

  • Recalibrates skin to a healthy, acidic pH 
  • Reduces ageing enzymes
  • Increases youth enzymes in the skin 
  • Stimulates collagen synthesis 
  • Increases skin hydration
  • Encourages skin cell renewal 
  • Brightens hyperpigmentation 
  • Treats and prevents the signs of sun damage

Beta Hydroxy Acid (Salicylic Acid) 

  • Decongests pores of dirt, debris and excess sebum 
  • Powerful anti-inflammatory, reduces redness and irritation 


  • Reduces solar-induced inflammation 
  • Prevents oxidative damage within the skin 
  • Increases skin firmness and elasticity

Australian SolarRepair Botanicals

  • Enhances solar repair 
  • Strengthens barrier function
  • Reduces inflammation


Vitamin A Complex

  • Skin cell rejuvenation 
  • Stimulates collagen production 
  • Fades hyperpigmentation
  • Decongests and prevents breakouts 

DNA Repair Enzymes

  • Supplement the skin's own DNA repair capacity 
  • Identifies, excises + corrects damaged DNA
  • Encourages quality DNA replication 
  • Reverses the damaging effects of UV exposure
  • Targets signs of sun damage before they appear 


  • Increases hydration and boosts NMFs within skin 
  • Strengthens barrier function 

Australian SolarRepair Botanicals

  • Boosts natural solar repair processes in the skin
  • Powerful anti-inflammatory
  • Downregulates sebum production