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The Science behind the Green Cleaning Ingredients

Under Your Sink ingredients are premium quality, organic & natural, so that you can clean with truly green products, knowing exactly what has gone into them. 


Besides being zero waste, vegan friendly, eco-friendly & more there is a reason each ingredients is in the toolkit. Let’s explore why. 

1. Alkali's

Nearly all cleaning products by nature will contain an alkali ingredient, which means the pH > 7. Strong Alkali's are used to make soap through the process of saponification. The same principal applies when cleaning with them, as they turn the grease, grime & oils into a dissolvable ‘soap’ which can be cleaned away with water. 


By nature they have powerful degreasing & stain removing qualities as well as can soften water. 


Washing Soda, Borax & Bicarb are the alkali sodium cousins which range in pH levels & in power.  They can all be found naturally in ancient mineral deposits & in your Under Your Sink Starter Kits. 


Click on the tabs for a quick summary & the picture if you want even more detail about each ingredient

  • WASHING SODA  
  • BORAX
  • BICARB
Sodium Carbonate

It raises the pH of water which assists in breaking up grease & grime. Strong degreaser, disinfectant & general cleaner.


The strongest of the sodium cousins, but may be considered a bit harsher for sensitive skin.


Sodium Borate

A builder which enhances the action of surfactants (eg soap)  by softening water. Also has moderate whitening/disinfecting power.


A controversial ingredient that is often promoted as great for health if ingested, this is where majority of the ‘safety concerns’ lay. But in terms of cleaning with it, centuries have proven its benefits.


Sodium Bicarbonate

Very well known with many practical uses around the home. It converts some water molecules to hydrogen peroxide providing a mild whitening/disinfecting power.


A natural odour eater too!

2. Oxygen Bleach

Oxygen bleaches are materials that release oxygen for cleaning, bleaching and dirt removal upon addition to water. They are a much safer alternative to chlorine bleach. This is the key ingredient in Napisan & other whitening products & also found in most commercial cleaners like dishwasher tablets, laundry powder.


Our Crystal Clear Percarbonate is a natural, powerful Oxybleach which is simply a combination of washing soda & hydrogen peroxide.

  • CRYSTAL CLEAR
Sodium Percarbonate

A non-chlorine natural Oxybleach which brightens, whitens & removes stains. Brilliant in the laundry but also as a heavy duty general cleaner around the home.


It combines the alkali strength of Washing Soda with the disinfecting qualities of Hydrogen Peroxide

3. Surfactants

There are MANY surfactants on the market – chemical companies are falling over themselves to invent new more powerful & now ‘greener’ options, because this is the function of cleaning that is vital in lifting dirt & oil. Two of the mot common are Soap & Detergent. 


Soap is made with lye (strong alkali), oils (plant or animal) & water. During the process the lye is fully converted to soap & no traces should be left in the end product. Let’s face it, oils can be expensive & during the war there was limited access to it. So, companies came up with other synthetic methods to create surfactants, many of which don't even contain a single natural ingredient.


For your toolkit, we offer 2 beautiful true handmade soaps, Organic Liquid Castile Soap & Organic Coconut Soap Flakes made with only pure virgin oils, water & lye. 

  • CASTILE SOAP
  • COCONUT SOAP
Organic Castile Soap

To be a true Castile Soap it must contain at least 80% olive oil. It can be a liquid or hard soap depending on the lye uses. 


Ours is a liquid soap, handmade in Melbourne from only pure organic virgin olive & coconut oil, water & lye. It's versatile, safe & the gentlest purest form of soap. 

Organic Coconut Soap Flakes

This is a hard soap ground into fine powder/flakes. It's handmade in Sri Lanka from only pure organic virgin coconut oil, water & lye. This means it's very high in cleansing properties & provided a lot more lather than Castile Soap. 


It only has its own natural fragrance, none added! So don't take a bit smell of the powder & avoid breathing the raised dust. 

4. Acids

No, not talking about having some LSD in your toolkit, just some good old Vinegar & Citric Acid will do the job! Acids are at the opposite end of the pH spectrum to the alkalis (which are bases). The thing with Acids & Bases is they neutralise each other when mixed together. That is why I cringe when I see recipes suggest mixing vinegar with Castile Soap, never do this! Yet when used one after the other they make a great team. 


The problem with soap is the dreaded soap scum, which is the soap reacting with the calcium & other ions in the water. This is not limited to the bathroom, this also happens to your clothes when you wash with, leaving them stiff. The answer is rinsing with an acid to neutralise & remove any of that leftover soap scum. 

  • CITRIC ACID
Citric Acid

Made from the rinds of citrus fruits, this easily to dissolve white crystal like powder removes hard water deposits & neutralises soap scum. 


Making this ideal in the bathroom, as a fabric softener, disinfectant & rinse aid. 

5. Emulsifiers & Thickeners

Although not essential to your toolkit, the ability to emulsify your essential oils & thicken your liquid products can come in handy.  What makes them great, is they don't react with the pH of other ingredients when mixing.


We recommend Organic Vegetable Glycerine & Xanthan Gum as your thickener duo.  

  • GLYCERINE
  • XANTHAN GUM
Organic Vegetable Glycerine

A by-product of the soap making process, rhis is a perfect emulsifier for Xanthan Gum & essential oils. 


Glycerine naturally absorbs moisture, making it an amazing moisturiser to use directly on your skin or in DIY beauty recipes. Warning though, it can get a bit 'sticky'

Xanthan Gum

Used from cosmetics to cooking, it works (& looks) very much like corn flour. It's a natural thickening agent and stabilizer which prevent ingredients from separating.


Made from natural sugars & the power of fermentation. 

GET SET UP

With our awesome green cleaning starter kits

removing toxins


From production to packaging - everything is sourced to ensure our products are genuinely eco-friendly,  toxic free & premium quality.

reducing waste


We are here to help clean up the  mess not contribute to it - this includes our packaging which is compostable paper or re-usable amber glass.

being ethical


Every single decision made in this business is done with integrity & with the intentions of doing the right thing. 

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