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
Niacinamide (Vitamin B3) helps to reduce blemishes by regulating sebum production and calming inflammation. Vitamin E functions as a powerful anti-inflammatory agent and helps to encourage healing processes within the skin, reducing the risk of acne scarring. Vitamin C brightens the complexion and stimulates collagen production to minimise scarring post-breakout. Zinc calms redness, soothes inflammation and helps to reduce breakouts. Australian SolarProtective Botanicals strengthen capillaries to reduce vascularity and redness.
Dry Skin
Niacinamide (Vitamin B3) helps to prevent moisture loss through the layers of the skin, whilst boosting the skin’s ceramide production and fortifying barrier function. Broad Spectrum Antioxidants defend skin from solar-induced oxidation and glycation, while nourishing dry skin. Natural Moisturising Factors and intercellular Lipids boost essential skin hydration. Australian SolarProtective Botanicals replenish the skin with Antioxidants, further preventing skin damage and dryness.
Niacinamide (Vitamin B3) inhibits the transfer of melanin to surface layers of the skin, preventing pigmentation and helping to fade existing sun-induced discolouration. Broad Spectrum Antioxidants help to prevent the formation of free radicals that cause the oxidation of skin cells and can result in pigmentation. Zinc and Melanin help to protect against the formation of pigmentation. Australian SolarProtective Botanicals boost the skin’s solar resilience, prevent glycation and protect against sun damage.
Niacinamide (Vitamin B3) boosts skin immunity, supporting it’s natural anti-inflammatory function for enhanced skin resilience and reduced vascularity. Zinc acts as a powerful anti-inflammatory, calming irritation, reducing redness and preventing sun damage by neutralising the effects of UVA and UVB. Australian SolarProtective Botanicals reduce redness and inflammation.
Niacinamide (Vitamin B3) boosts skin immunity and fortifies barrier function. Vitamin E encourages healing processes and reduces inflammation. Zinc Oxide soothes inflammation, reduces redness and protects skin from solar damage. Australian SolarProtective Botanicals reduce inflammation and irritation within the skin.
Sun Damage
Niacinamide (Vitamin B3) boosts skin immunity, strengthening solar resilience and fortifying barrier function. Broad Spectrum Antioxidants protect skin from solar-induced oxidation and glycation whilst helping to re-firm and rejuvenate sun damaged skin. Zinc Oxide and Melanin absorb and scatter UV light. Australian SolarProtective Botanicals increase the skin’s natural solar defence mechanisms.

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.

Maintain your glow on-the-go with the Essential Six Travel Kit.
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