Depending on the tea, I have usually only used it for color. Kombucha tea, I used as a novelty, or as others would say 'label appeal' just like beer soap is for novelty or label appeal, except that both also provide sugars for boosting bubbles. Any liquid substitute with natural or added sugars would do that.
As far as any medicinal or (ingested) nutritional effect from teas, drinks, herbs surviving lye, quite honestly, I do not believe any does, AND even if it did, I very much doubt any benefit would be derived by using said soap.
In rare cases, I do believe some soothing effects can persist in soap from a minimal number of additives, but for the most part, unless I notice such effect on my own skin, I don't believe it. However, I also know that preconceived ideas and personal beliefs or expectations can and do play a part in how a user experiences benefit from what they use, soap included. But as a matter of ethics, I would never play on that with actual humans as it relates to my soapmaking.
As far as any medicinal or (ingested) nutritional effect from teas, drinks, herbs surviving lye, quite honestly, I do not believe any does, AND even if it did, I very much doubt any benefit would be derived by using said soap.
In rare cases, I do believe some soothing effects can persist in soap from a minimal number of additives, but for the most part, unless I notice such effect on my own skin, I don't believe it. However, I also know that preconceived ideas and personal beliefs or expectations can and do play a part in how a user experiences benefit from what they use, soap included. But as a matter of ethics, I would never play on that with actual humans as it relates to my soapmaking.