This paper on PubMed discusses why soap might not be good for delicate skin:

Benefits of mild cleansing: synthetic surfactant based (syndet) bars for patients with atopic dermatitis
Atopic dermatitis (AD) is a recurring inflammatory skin disease, characterized by marked pruritus, which usually develops in early childhood. AD is associated with a wide array of symptoms, including itching, dryness, erythema, crusted lesions, and superficial inflammation. Topical steroid cream or ointment with proper washing is a primary treatment approach for AD. Nonsoap-based personal washing or syndet bars containing synthetic detergents or surfactants are milder than soaps; thus, they are widely used by patients with a variety of skin conditions, including AD. The primary goals of this study were to determine the compatibility of syndet bar use with the therapy of AD and the potential benefits of syndet bars compared with subjects’ usual cleansing products, mostly soap bars. In this evaluation, 50 subjects (14 subjects were aged < or =15 years) with mild AD on a stable treatment regimen were recruited and asked to use 1 of 2 syndet bars as part of their normal shower routine for 28 days. The severity of eczematous lesions, skin condition (dryness, erythema, texture), and hydration were evaluated at baseline and after 28 days of syndet application by investigators and subjects. Syndet bar use reduced the severity of eczematous lesions, improved skin condition, and maintained hydration. Overall, the results of this study indicate that syndet formulations are compatible with the therapy of AD.

Would YOU wash your hair with a shampoo containing butter(s) or oil(s)? Our shampoo bars contain 89% (by mass) gentle, effective, cleaning ingredients: NO butter(s) or oil(s).

The majority of shampoo bars on the market waste butter(s) and oil(s) by adding them to their bar(s). These additions compete with the natural oils on your scalp and hair for the cleaning ingredients in these ‘other shampoo bars’. That means you end up applying more of the ‘other shampoo bar’ to clean your hair of the useless (& wasted) butter(s) and oil(s), but then you’re also applying more of the useless butter(s) and oil(s!!!) so you need more of the ‘other shampoo bar’. It’s a vicious cycle! 🤯

PLUS the added butter(s) and oil(s) that you’ve paid for, in the ‘other shampoo bars, just get washed away, having been WASTED, with NO cleaning benefit to your hair. Tsk, tsk, tsk.

See the difference between OUR shampoo bars and a competitor’s that has oil(s) in its shampoo bar? The choice for CLEAN hair is clear…

Skin Goop’s shampoo bar has much more gentle cleaning power as you can see by the amount of bubbles on the RIGHT (Skin Goop shampoo bar) vs. the one on the LEFT (Garnier, with oils in its bar).

Solutions of equal amounts of each shampoo bar were made, then an equal amount of vegetable oil was added to each solution and shaken. The amount of bubbles on the surface is a representation of cleaning ingredients available to clean your hair.

Spring and summer mean soap-making!

Notice that our crack Goopist is talented enough to be working on two batches of soap at the same time.

AssTounding! Someone call Guinness Records!

Once the soap is cooked, we’re ready to add scent to it.

Adding our lavender buds to our lavender soaps.

Now is not the time to tickle the soaper. 🙂

Passive drying of fresh, native rose petals yields beautiful speckles in our Soft Rose soap.

The scented soaps are then put into molds.

Once in the molds, we let the soap cool off before pushing it out of the tube molds. After a few days, we cut the soap into handy rounds.

Letting the soaps dry for a few weeks ensures a harder, longer-lasting bar of soap. Magnifique!

The soap-drying area smells so good!!

We grate some of our soap to make our wonderful hard-surface cleaner: Citrus Scrubby Soap.

Hammie the boss once mistook the grated soap for cheese. Only once. He did not want to be photgraphed after that faux pas.

Looking for a miracle to reduce signs of aging? Just dim the lights. 😉

Hammie the boss mostly squeaks and waves the spurtle menacingly. No Goopists were hurt…they just got frightened.

We grow a number of varieties for different uses, without using pesticides or artificial fertilizers, ever.

All of our lavender is harvested without harming insects or spiders. It’s all cruelty free! 😊

And look at that smashing sombrero!

Admire the golden liquid oil on top of the hydrosol in the separatory funnel. Mesmerizing, no?

Oatmeal has been shown to have anti-itch properties. See some of the papers showing this below (and on PubMed):

• Mechanism of Action and Clinical Benefits of Colloidal Oatmeal for Dermatologic Practice
  Colloidal oatmeal has a long history of beneficial use in dermatology. It is a natural product that has an excellent safety record and has demonstrated efficacy for the treatment of atopic dermatitis, psoriasis, drug-induced rash and other conditions. In recent years, in vitro and in vivo studies have begun to elucidate the multiple mechanisms of action of naturally derived colloidal oatmeal. Evidence now describes its molecular mechanisms of anti-inflammatory and antihistaminic activity. The avenanthramides, a recently described component of whole oat grain, are responsible for many of these effects. Studies have demonstrated that avenanthramides can inhibit the activity of nuclear factor kappaB and the release of proinflammatory cytokines and histamine, well known key mechanisms in the pathophysiology of inflammatory dermatoses. Topical formulations of natural colloidal oatmeal should be considered an important component of therapy for atopic dermatitis and other conditions and may allow for reduced use of corticosteroids and calcineurin inhibitors.
• Anti-inflammatory Activities of Colloidal Oatmeal (Avena Sativa) Contribute to the Effectiveness of Oats in Treatment of Itch Associated With Dry, Irritated Skin
  Oat (Avena sativa) in colloidal form is a centuries-old topical treatment for a variety of skin conditions, including skin rashes, erythema, burns, itch, and eczema; however, few studies have investigated the exact mechanism of action for the anti-inflammatory activity of colloidal oatmeal.
• Colloidal Oatmeal: History, Chemistry and Clinical Properties
  Oatmeal has been used for centuries as a soothing agent to relieve itch and irritation associated with various xerotic dermatoses. In 1945, a ready to use colloidal oatmeal, produced by finely grinding the oat and boiling it to extract the colloidal material, became available. Today, colloidal oatmeal is available in various dosage forms from powders for the bath to shampoos, shaving gels, and moisturizing creams. Currently, the use of colloidal oatmeal as a skin protectant is regulated by the U.S. Food and Drug Administration (FDA) according to the Over-The-Counter Final Monograph for Skin Protectant Drug Products issued in June 2003. Its preparation is also standardized by the United States Pharmacopeia. The many clinical properties of colloidal oatmeal derive from its chemical polymorphism. The high concentration in starches and beta-glucan is responsible for the protective and water-holding functions of oat. The presence of different types of phenols confers antioxidant and anti-inflammatory activity. Some of the oat phenols are also strong ultraviolet absorbers. The cleansing activity of oat is mostly due to saponins. Its many functional properties make colloidal oatmeal a cleanser, moisturizer, buffer, as well as a soothing and protective anti-inflammatory agent.