Recipes, Soap Recipes

Gentle Solid Shampoo Bars: Yields 2 x 80g bars


There has been some talk about solid shampoo bars having high PH which is not particularly good for hair.  A nice, PH balanced shampoo will keep your hair and scalp in good condition.  It is all about the chosen surfactants.

We will keep updating and adding great information for changing up the formula for an enhanced finished product.

Benefits of our Solid Shampoo (Syndet)

  • Ease of travel
  • Gentle and silky
  • Easy to make
  • Low PH

The word “syndet” is derived from “synthetic” combined with “detergent”. Technically it refers to the binding that occurs between different detergents, also called surfactants. These detergents, which have an affinity for oils and repel water, surround dirt with small structures that are then removed by water.

Gentle Solid Shampoo Bar Recipe Yield approx 300 grams 

1st Heated phase

1 3/4 tsp 1.7% Cocamidopropyl betaine (heat separately and add the panthenol powder if using it) Surfactant 
5.5 TB SCI 37.7% Sodium Cocoyl Isethionate gentle surfactant (crush up in a baggie if not using a powdered form.  Melting is preferred to pressing your surfactant. 
2nd Heated Phase
1 3/4 tsp 3.4% Kokum butter. (if using volume and not % melt to measure)  Moisturizer & conditioner
1 3/4 tsp 3.4% BTMS 50 Conditioning emulsifier or BTMS 25 Conditioning emulsifier 
1  tsp 1.9% Cetyl Alcohol  emollient, emulsifier

3/4 tsp 1.5% protein of choice (Hydrolyzed Silk or Baobab Protein)  improves elasticity, resiliency, and restore the moisture balance for smoother and softer hair.

1/4 cup plus 2 tsp 33.28% Lathanol SLSA, Sodium lauryl Sulfocete. Surfactant powder for foam. 

Cool-down phase 

2 TB 13.7% Coco Symplex Mild surfactant can be substituted with coco glucoside, Amphosol CG, BSB or Bio-Terge  


1 tsp 2.28% Panthenol powder  Humectant that helps give body & shine and detangling properties to hair. It can cause curly hair to frizz, however.  If you omit this, add this % to the SCI or SLSA (add to 1 heated phase.  Be careful to not let it burn)

1/2 tsp .57% scent  (more can be added depending on your choice of scent)

Optional: Water soluble dye or micas for color


Melt your 1st heated phase over the stove at medium heat.  At the same time in a separate vessel heat, your 2nd heated phase by totally melting the kokum butter then add remainder of the 2nd heated phase and continue to heat until melted. Combine both heated phases mix well and remove from the heat.  If you find the 1st heated phase needs more moisture, multiply the Cocamidopropyl betaine by up to 3 times.  It may take your final bar longer to harden.

Mix in your cool down phase.  If adding color, this is the time.  

Allow to cool to 80 Degrees Celsius or less and mix in the Optiphen Plus, and scent, color (judge this and use sparingly) if using and combine.

Press tightly into your mold and allow to firm up. (Not a smooth batter so beware) Your mold can be placed in the freezer for a couple of hours.  No need to cure or cover.  Can be used after 24 hours.  Lather the bar in your hands at first, add to your wet hair and then use the bar directly on your hair for more lather.

Essential Oil Ideas

Bergamot can be of great benefit to thin, dry hair that breaks.  It increases shine & can help make a protective barrier if you style your hair with heat.  If you have curly or frizzy hair try this Citrusy essential oil.  
Rosemary is great for thickening hair. It can help prevent baldness, slow the graying process and treating dandruff and dry scalp.
Chamomile essential oil is a great essential oil for hair because it adds shine and softness to your hair while soothing your scalp.  It can be used to lighten your hair naturally. 
Cedarwood essential oil can also help to reduce skin irritations and repel bugs, which can be beneficial on summer nights when you’re spending time outdoors
Lemongrass essential oil has healing properties, and it works as an effective cleanser and deodorizer. It can strengthen your hair follicles and soothe an itchy and irritated scalp. 
Peppermint essential oil helps to stimulate the scalp, and it can treat dandruff and even lice due to its powerful antiseptic properties.  It also stimulates hair growth.  Caution:  Don’t over do it, as it is a very strong essential oil

2 thoughts on “Gentle Solid Shampoo Bars: Yields 2 x 80g bars”

  1. Are your percentages given based on weight, or volume? Would appreciate this so much more if weight were included. If you’ve been a maker for 20 years than you know that formulas should always be by weight in order to assure consistent results. SCI comes in a lot of different forms from needles to powder. The weight of 5.5 tablespoons is gonna vary a lot depending on which you are using, throwing your percentages way off. Otherwise, looks nice!

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