Let's face it: Soap making is a finicky craft. It takes time to find a recipe and method that gives consistently good results. Even then, you just have to add one new ingredient (e.g. honey) and - boom - soap volcano. If you manage to dodge all major soap catastrophes and get to the point where you want to try your hand at an intricate design, it's the small details that can really make a difference.
Over the years I've had many soapy fails, some turned into flat out unusable soap, but some just didn't quite hit the design mark (the one that I had set for myself). I want to share 5 things I've discovered along the way that have impacted my soap design (and not for the better).
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Forgetting that Titanium Dioxide (TD) can thicken up your batter
Lately thickened batter due to the use of TD has affected my soap designs more often than I'd like to admit. TD behaves in soap similar to clay, it tends to absorb water and as a result makes your batter less fluid. I like to premix TD in warm water before it goes into the soap and even then it doesn't always play nice.
Pay attention to how the white soap behaves in the short video below. Nothing is different about the white soap compared to the other colors except the use of TD. Can you see the difference in viscosity?
In the end this soap still turned out looking pretty neat, but simply not as uniform as I had hoped for.
Even in my latest tutorial of this cute Sea Shore Soap I encountered and talk about this issue. Here you can see how the white soap didn't swirl in with the other colors.
2. Using containers that are made of different materials
Oftentimes when we want to achieve a certain design we need to separate our batter into separate containers in order to add different colors to it. Now, in the past I’ve often used let’s say 2 plastic jugs and a glass measuring cup. I always wondered why the batter in the glass container was so much thicker? Until one day it dawned on me: the glass is keeping the batter warmer therefore trace was moving faster. Aha!
And how did this hurt my design?
Well, I was attempting a hanger swirl sort of a thing and the thicker batter moved differently than the other two. The problem wasn’t necessarily that it was thick, it was that ideally you want all three colors to have uniform consistency in order to get a harmonious swirl. So, yes, it did make the swirl look less fluid, but on the whole the soap still looked fine. Similar to the soaps you saw above.
3. Saving too much batter to decorate the top
I’m not one to make extra batter to have just in case. Whatever amount my mold holds that’s how much I make. But that also means that I need to, depending on the look I’m going for, be bold and dump most of my batter in there if I want to fill my mold all the way. I’m always surprised at how little I really need to deck out the top. I just need to thoroughly scrape my bowl and, voila, just enough.
But I find myself too often with way too much batter at the end and I wind up dripping more and more batter on the top.
Look at this butterfly swirl I made a couple of years ago. Can you see how on the side (which really is the top, I just flipped the soap for the photo) things get a little busy and stop being part of the more fluid swirl? I think it would look much neater without the drippy bits on top, don't you think?
4. Not knowing when to stop swirling the top
Speaking of soap tops, here’s another one. I tend to sometimes get so caught up in the swirling and whirling action that I don’t realize that my colors have long all mixed together and are now one indistinct muddle (is that a word?). Just like when my kids experiment with mixing different colors, well eventually it always ends up being – brown.
The key is not to overdo it, when you think it’s good enough leave it.
5. Not premixing your colorants properly
This used to happen to me a lot and I used to get so mad. The main reason probably was that I was using oxides and underestimated just how much you have to premix them in order to get a good result. With oxides you really need to stick blend your soap in order to get rid of the clumps.
In the image below I realized when I was in the middle of making the soap that I hadn’t premixed enough color so I just dumped teaspoons of oxides straight into the batter. As you can see the stick blending didn’t help.
Just save yourself the trouble and use micas they’re far easier to incorporate. I always keep a premixed condiment bottle of titianium dioxide handy and always strain it before it goes into the soap.
Tell me:
Are there any “mistakes” you’ve made in the past that have affected the look of your soap? Maybe something that you’ve discovered by chance? I’d be curious to know.
Until next time. Happy Tinkering!
Aileen
I wanted to use cranberry juice and it turned the ugliest "I have a really bad stomach" green when mixed with lye!
Celine
Oh no, experimenting with soap always leads to "surprises" 😉
Aileen
I didn't know about the glass jar vs. plastic jars. Now it all makes sense!!! Thanks for sharing!
Laura
I once left out an ingredient leaving my soap lye heavy it was only 100g of ingredients but it made a massive difference as the soap was not safe enough to sell
Celine
Oh boy, yes it can happen quickly.
Roopa
I’m learning so much from you. I’m new to soap making and everyday is a surprise. Thank you so much for all the information
Celine
I’m glad to hear, Roopa. Thank you very much for your kind words. Happy Tinkering 😃
Savanah
I didn’t know about vanilla/vanillin in fragrance oils and made 100 bars of blueberry soaps and they were so pretty when they were done. Then a few days later they turned the most disgusting brown and blue color!!! I could t sell them! They smelt amazing but OMG they were disgusting! It was like the soap was dirty!
Celine
Hi Savannah, oh no that's too bad. That happened to me too when I was a beginner, at least in my case it was a coffee soap - so it somehow fit the theme 😉 What scent did you use for your blueberry soap?
Susan
Hi, What do you recomend to use for colors. I am a relatively new cold process soaper and have not had real good luck with coloring my soap.
Celine
Hi Susan,
It depends if you want to color your soap with only natural ingredients or not. For non natural colorants I prefer micas hands down. Natural colorants can be a little trickier since there is a good chance they might morph to a different color or fade quickly. If gotten the best results with clays, nettle leaf powder (for dark green) or dried calendula. I've shared many recipes using natural colorants on some I've included the look after 6 months. Feel free to check them out under "cold process soap recipes". Happy Tinkering 🙂
michelle
when you pre mix td do you need to keep it in the frig or in the cupboard
Celine
Hi Michelle, good question. I keep it outside the fridge unless you’re using an oil with a very short shelf life you should be ok. Happy Tinkering:)
Vic
Hi Celine
I'm new. what EO in your practice made trace thicker instantly?
Celine
Hi Vic, I haven’t seen it so much with EO, but with fragrance oils especially floral ones.
Brenda
Hi. Could you please tell me what to disolve the micas or clays with? If using oil or water do I discount it from the reciepe or take oil from the warmed oils? And which is the best stage to add them? Because I am finding my soap traces so fast I have trouble mixing it in properly. Which after reading what you said about the glass jug, may be because I mix my soap in the heavy bottomed pot I use to heat the oils in.
Celine
Hi Brenda, I usually use warmed oils for the micas and water for clays and titanium dioxide. 1 tsp of colorant to 1 Tbsp of oil/ water. I don’t discount when I dissolve in water since it will eventually evaporate. The key is to keep your batter ultra thin, I now stop stick blending when the oils are emulsified and stir by hand from there on if needed. I add the colors at thin- medium trace. Hope that helps!
Carolyn
Have you ever experienced your soap batter hardening quicker after you add fragrance?
Celine
Hi Carolyn, yes I certainly have. Particularly floral fragrances are notorious for that.
Heli
I once bought a bottle of soap dye that said "purple" on it. Used it in my next batch and it was all brown! I thought it had reacted with some ingredient and turned brown. Well, I tried it again a second time and it turned out brown -again. Finally I poured some of the colorant on some tissue paper and it really was brown! The label was wrong. Two ruined sets of soap that smelled beautiful but looked awful. Ended up using them myself.